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HandWiki. Aerial Bombardment and International Law. Encyclopedia. Available online: https://encyclopedia.pub/entry/31766 (accessed on 20 April 2024).
HandWiki. Aerial Bombardment and International Law. Encyclopedia. Available at: https://encyclopedia.pub/entry/31766. Accessed April 20, 2024.
HandWiki. "Aerial Bombardment and International Law" Encyclopedia, https://encyclopedia.pub/entry/31766 (accessed April 20, 2024).
HandWiki. (2022, October 28). Aerial Bombardment and International Law. In Encyclopedia. https://encyclopedia.pub/entry/31766
HandWiki. "Aerial Bombardment and International Law." Encyclopedia. Web. 28 October, 2022.
Aerial Bombardment and International Law
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Air warfare must comply with laws and customs of war, including international humanitarian law by protecting the victims of the conflict and refraining from attacks on protected persons. These restraints on aerial warfare are covered by the general laws of war, because unlike war on land and at sea—which are specifically covered by rules such as the 1907 Hague Convention and Protocol I additional to the Geneva Conventions, which contain pertinent restrictions, prohibitions and guidelines—there are no treaties specific to aerial warfare. To be legal, aerial operations must comply with the principles of humanitarian law: military necessity, distinction, and proportionality: An attack or action must be intended to help in the military defeat of the enemy; it must be an attack on a military objective, and the harm caused to civilians or civilian property must be proportional and not excessive in relation to the concrete and direct military advantage anticipated.

humanitarian law proportionality warfare

1. International Law up to 1945

Before and during World War II (1939-1945), international law relating to aerial bombardment rested on the treaties of 1864, 1899, and 1907, which constituted the definition of most of the laws of war at that time — which, despite repeated diplomatic attempts, was not updated in the immediate run-up to World War II. The most relevant of these treaties is the Hague Convention of 1907 because it was the last treaty ratified before 1939 which specified the laws of war regarding the use of bombardment. In the Hague Convention of 1907, two treaties have a direct bearing on the issue of bombardment. These are "Laws of War: Laws and Customs of War on Land (Hague IV); 18 October 1907"[1] and "Laws of War: Bombardment by Naval Forces in Time of War (Hague IX); 18 October 1907".[2] It is significant that there is a different treaty which should be invoked for bombardment of land by land (Hague IV) and of land by sea (Hague IX).[3] Hague IV, which reaffirmed and updated Hague II (1899),[4] contains the following clauses:

Although the 1907 Hague Conventions IV – The Laws and Customs of War on Land and IX – Bombardment by Naval Forces in Time of War prohibited the bombardment of undefended places, there was no international prohibition against indiscriminate bombardment of non-combatants in defended places, a shortcoming in the rules that was greatly exacerbated by aerial bombardment.

The attendees of the Second Hague Conference in 1907 did adopt a "Declaration Prohibiting the Discharge of Projectiles and Explosives from Balloons" on 18 October 1907. It stated: "The Contracting Powers agree to prohibit, for a period extending to the close of the Third Peace Conference, the discharge of projectiles and explosives from balloons or by other new methods of a similar nature."[5] The foreshadowed "Third Peace Conference" never took place, and the Declaration remains in force. The United Kingdom and the United States ratified the Declaration.[6]

With the rise of aerial warfare, non-combatants became extremely vulnerable and inevitably became collateral targets in such warfare - potentially on a much larger scale than previously.[7][8]

German airship Schütte Lanz SL2 bombing Warsaw in 1914. https://handwiki.org/wiki/index.php?curid=1932823

World War I (1914-1918) saw the first use of strategic bombing when German Zeppelins and aircraft indiscriminately dropped bombs on cities in Britain and France. These nations, fighting against Germany and its allies in the war, retaliated with their own air-raids[9] (see Strategic bombing during World War I). A few years after World War I, a draft convention was proposed in 1923: The Hague Rules of Air Warfare.[10] The draft contained a number of articles which would have directly affected how militaries used aerial bombardment and defended against it: articles 18, 22 and 24. The law was, however, never adopted in legally binding form[11] as all major powers criticized it as being unrealistic.[12]

The Greco-German arbitration tribunal of 1927–1930 arguably established the subordination of the law of air warfare to the law of ground warfare. It found that the 1907 Hague Convention on "The Laws and Customs of War on Land" applied to the German attacks in Greece during World War I:[13] This concerned both Article 25 and Article 26.

Jefferson Reynolds in an article in The Air Force Law Review argues that "if international law is not enforced, persistent violations can conceivably be adopted as customary practice, permitting conduct that was once prohibited."[14] Even if the Greco-German arbitration tribunal findings had established the rules for aerial bombardment, by 1945, the belligerents of World War II had ignored the preliminary bombardment procedures that the Greco-German arbitration tribunal had recognized.[15]

German Heinkel He 111 planes bombing Warsaw (September 1939). https://handwiki.org/wiki/index.php?curid=1589488

The German bombings of Guernica and Durango in Spain in 1937 during the Spanish Civil War of 1936-1939 and the Japanese aerial attacks on crowded Chinese cities during the Second Sino-Japanese War in 1937–38 attracted worldwide condemnation, prompting the League of Nations to pass a resolution[16] that called for the protection of civilian populations against bombardment from the air.[17][18] In response to the resolution passed by the League of Nations,[16] a draft convention in Amsterdam of 1938[19] would have provided specific definitions of what constituted an "undefended" town, excessive civilian casualties and appropriate warning. This draft convention makes the standard of being undefended quite high – any military units or anti-aircraft within the radius qualifies a town as defended. This convention, like the 1923 draft, was not ratified - nor even close to ratification - when hostilities broke out in Europe in 1939. While the two conventions offer a guideline to what the belligerent powers were considering before the war, neither of these documents came to be legally binding.

At the start of World War II in 1939, following an appeal by Franklin D. Roosevelt, President of the then neutral United States, the major European powers, including Britain and Germany, agreed not to bomb civilian targets outside combat zones: Britain agreeing provided that the other powers also refrained. (see the policy on strategic bombing at the start of the World War II). However, this was not honored, as belligerents of both sides in the war adopted a policy of indiscriminate bombing of enemy cities. Throughout World War II, cities like Chongqing, Warsaw, Rotterdam, London, Coventry, Stalingrad, Hamburg, Dresden, Tokyo, Hiroshima, and Nagasaki suffered aerial bombardment, causing untold numbers of destroyed buildings and the deaths of tens of thousands of civilians.[20]

After World War II, the massive destruction of non-combatant targets inflicted during the war prompted the victorious Allies to address the issue when developing the Nuremberg Charter of August 1945 to establish the procedures and laws for conducting the Nuremberg Trials (1945-1946). Article 6(b) of the Charter thus condemned the "wanton destruction of cities, towns or villages, or devastation not justified by military necessity" and classified it as a violation of the laws or customs of war, therefore, making it a war crime. This provision was similarly used at the Tokyo Trials of 1946-1948 to try Japanese military and civilian leaders in accordance with the Tokyo Charter (January 1946) for illegal conducts committed during the Pacific War of 1941-1945. However, due to the absence of positive or specific customary international humanitarian law prohibiting illegal conducts of aerial warfare in World War II, the indiscriminate bombing of enemy cities was excluded from the category of war crimes at the Nuremberg and Tokyo Trials, therefore, no Axis officers and leaders were prosecuted for authorizing this practice. Furthermore, the United Nations War Crimes Commission received no notice of records of trial concerning the illegal conduct of air warfare.[21] Chris Jochnick and Roger Normand in their article The Legitimation of Violence 1: A Critical History of the Laws of War explain that: "By leaving out morale bombing and other attacks on civilians unchallenged, the Tribunal conferred legal legitimacy on such practices."[22][23]

Mushroom cloud from the atomic explosion over Nagasaki (August 9, 1945). https://handwiki.org/wiki/index.php?curid=1329181

In 1963 the atomic bombings of Hiroshima and Nagasaki became the subject of a Japanese judicial review in Ryuichi Shimoda et al. v. The State. The review draws several distinctions which are pertinent to both conventional and atomic aerial bombardment. Based on international law found in Hague Convention of 1907 IV – The Laws and Customs of War on Land and IX – Bombardment by Naval Forces in Time of War, and the Hague Draft Rules of Air Warfare of 1922–1923 the Court drew a distinction between "Targeted Aerial Bombardment" and indiscriminate area bombardment (which the court called "Blind Aerial Bombardment"), and also a distinction between a defended and an undefended city.[24] "In principle, a defended city is a city which resists an attempt at occupation by land forces. A city even with defence installations and armed forces cannot be said to be a defended city if it is far away from the battlefield and is not in immediate danger of occupation by the enemy."[25] The court ruled that blind aerial bombardment is permitted only in the immediate vicinity of the operations of land forces and that only targeted aerial bombardment of military installations is permitted further from the front. It also ruled that, in such an event, the incidental death of civilians and the destruction of civilian property during targeted aerial bombardment was not unlawful.[26] The court acknowledged that the concept of a military objective was enlarged under conditions of total war, but stated that the distinction between the two did not disappear.[27] The court also ruled that when military targets were concentrated in a comparatively small area, and where defence installations against air raids were very strong, that when the destruction of non-military objectives is small in proportion to the large military interests, or necessity, such destruction is lawful.[26] Thus, in the judgement of the Court, because of the immense power of the atom bombs, and the distance from enemy land forces, the atomic bombings of both Hiroshima and Nagasaki "was an illegal act of hostilities under international law as it existed at that time, as an indiscriminate bombardment of undefended cities".[28]

Not all governments and scholars of international law agree with the analysis and conclusions of the Shimoda review, because it was not based on positive international humanitarian law. Colonel Javier Guisández Gómez, at the International Institute of Humanitarian Law in San Remo, points out:

John R. Bolton, (Under Secretary of State for Arms Control and International Security Affairs (2001–2005) and U.S. Permanent Representative to the United Nations (2005–2006)), explained in 2001 why the USA should not adhere to the Rome Statute of the International Criminal Court:

2. International Law Since 1945

In the post war environment, a series of treaties governing the laws of war were adopted starting in 1949. These Geneva Conventions would come into force, in no small part, because of a general reaction against the practices of the Second World War. Although the Fourth Geneva Convention attempted to erect some legal defenses for civilians in time of war, the bulk of the Fourth Convention devoted to explicating civilian rights in occupied territories, and no explicit attention is paid to the problems of bombardment.[29]

In 1977, Protocol I was adopted as an amendment to the Geneva Conventions, prohibiting the deliberate or indiscriminate attack of civilians and civilian objects, even if the area contained military objectives, and the attacking force must take precautions and steps to spare the lives of civilians and civilian objects as possible. However, forces occupying near densely populated areas must avoid locating military objectives near or in densely populated areas and endeavor to remove civilians from the vicinity of military objectives. Failure to do so would cause a higher civilian death toll resulting from bombardment by the attacking force and the defenders would be held responsible, even criminally liable, for these deaths. This issue was addressed because drafters of Protocol I pointed out historical examples such as Japan in World War II who often dispersed legitimate military and industrial targets (almost two-thirds of production was from small factories of thirty or fewer persons or in wooden homes, which were clustered around the factories) throughout urban areas in many of its cities either with the sole purpose of preventing enemy forces from bombing these targets or using its civilian casualties caused by enemy bombardment as propaganda value against the enemy. This move made Japan vulnerable to area bombardment and the U.S. Army Air Forces (USAAF) adopted a policy of carpetbombing which destroyed 69 Japanese cities with either incendiary bombs or atomic bombs, with the deaths of 381,000-500,000 Japanese people.[30][31][32][33]

However, Protocol I also states that locating military objectives near civilians "shall not release the Parties to the conflict from their legal obligations with respect to the civilian population and civilians." (Article 51, Para 8)[34]

The International Court of Justice gave an advisory opinion in July 1996 on the Legality of the Threat Or Use Of Nuclear Weapons. The court ruled that "[t]here is in neither customary nor international law any comprehensive and universal prohibition of the threat or use of nuclear weapons." However, by a split vote, it also found that "[t]he threat or use of nuclear weapons would generally be contrary to the rules of international law applicable in armed conflict." The Court stated that it could not definitively conclude whether the threat or use of nuclear weapons would be lawful or unlawful in an extreme circumstance of self-defense, in which the very survival of the state would be at stake.[35]

References

  1. Laws of War: Laws and Customs of War on Land (Hague IV); 18 October 1907 available from the Avalon Project at the Yale Law School, entered into force: 26 January 1910. http://avalon.law.yale.edu/20th_century/hague04.asp
  2. Laws of War: Bombardment by Naval Forces in Time of War (Hague IX); October 18, 1907, available from the Avalon Project at the Yale Law School, http://avalon.law.yale.edu/20th_century/hague09.asp
  3. International Review of the Red Cross no 323 cites: Charles Rousseau, References p. 360. "the analogy between land and aerial bombardment". http://www.icrc.org/web/eng/siteeng0.nsf/iwpList200/42F64C9A4212EA07C1256B66005C0BF1
  4. Laws of War: Laws and Customs of War on Land (Hague II); July 29, 1899, available from the Avalon Project at the Yale Law School, entry into force 4 September 1900 http://avalon.law.yale.edu/20th_century/hague02.asp
  5. Declaration (XIV) Prohibiting the Discharge of Projectiles and Explosives from Balloons. The Hague, 18 October 1907. https://ihl-databases.icrc.org/applic/ihl/ihl.nsf/xsp/.ibmmodres/domino/OpenAttachment/applic/ihl/ihl.nsf/10BB640A9FF13B49C12563CD002D6895/FULLTEXT/IHL-29-EN.pdf
  6. "Declaration (XIV) Prohibiting the Discharge of Projectiles and Explosives from Balloons. The Hague, 18 October 1907.". International Cimmittee of the Red Cross. https://ihl-databases.icrc.org/applic/ihl/ihl.nsf/INTRO/245?OpenDocument. "This Conference never having met, the Declaration of 1907 is still formally in force today. [...] Of the great Powers only Great Britain and the United States ratified the Declaration." 
  7. International Dimensions of Humanitarian Law, Volume 1. Brill Publishers. 1988. p. 115. 
  8. Judith Gail Gardam (8 April 1993). Non-Combatant Immunity As a Norm of International Humanitarian Law. Springer Publishing. p. 21. ISBN 0-7923-2245-2. 
  9. Tucker C. Spencer, Priscilla Mary Roberts. "World War I: A Student Encyclopedia". page 45. Routledge.
  10. The Hague Rules of Air Warfare, 1922–12 to 1923–02, this convention was never adopted'. http://www.lib.byu.edu/~rdh/wwi/1918p/hagair.html
  11. Rules concerning the Control of Wireless Telegraphy in Time of War and Air Warfare, from the International Committee of the Red Cross's section on international humanitarian law verified 26 February 2005 http://www.icrc.org/ihl.nsf/0/b9ca3866276e91cfc12563cd002d691c?OpenDocument
  12. Howard M. Hensel (19 February 2008). The Legitimate Use of Military Force (Justice, International Law and Global Security). Ashgate. p. 194. ISBN 978-92-3-102371-2. 
  13. Laws of War: Laws and Customs of War on Land (Hague IV); October 18, 1907 available from the Avalon Project at the Yale Law School, entered into force: 26 January 1910 http://avalon.law.yale.edu/20th_century/hague04.asp#art26
  14. Jefferson D. Reynolds. "Collateral Damage on the 21st century battlefield: Enemy exploitation of the law of armed conflict, and the struggle for a moral high ground". Air Force Law Review "COLLATERAL DAMAGE ON THE 21ST CENTURY BATTLEFIELD: ENEMY EXPLOITATION OF THE LAW OF ARMED CONFLICT, AND THE STRUGGLE FOR A MORAL HIGH GROUND", Volume 56, 2005(PDF) Page 57/58. http://permanent.access.gpo.gov/lps28111/Vol.%2056%20(2005)/Volume%2056%20Combined.pdf
  15. Javier Guisández Gómez The Law of Air Warfare 30 June 1998 International Review of the Red Cross no 323, p. 347–363 http://www.icrc.org/web/eng/siteeng0.nsf/iwpList200/42F64C9A4212EA07C1256B66005C0BF1
  16. Protection of Civilian Populations Against Bombing From the Air in Case of War, Unanimous resolution of the League of Nations Assembly, 30 September 1938, verified 26 February 2005 http://www.dannen.com/decision/int-law.html#D
  17. Roger O'Keefe (15 January 2007). The Protection of Cultural Property in Armed Conflict. Cambridge University Press. p. 50. ISBN 978-0-521-86797-9.  https://www.wikipedia.org/wiki/Cambridge%20University%20Press
  18. A. P. V. Rogers (1996). Law on the Battlefield. Manchester University Press. p. 53. ISBN 0-7190-4785-4. 
  19. Draft Convention for the Protection of Civilian Populations Against New Engines of War. Amsterdam, 1938, verified 26 February 2005 http://www.icrc.org/ihl.nsf/0/910f79361f226492c125641e004057ed?OpenDocument
  20. Robert P. Newman (2011). Truman and the Hiroshima Cult. MSU Press. pp. 121–125. ISBN 978-0-87013-940-6. 
  21. Judith Gardam (21 July 2011). Necessity, Proportionality and the Use of Force by States. Cambridge University Press. p. 130. ISBN 978-0-521-17349-0.  https://www.wikipedia.org/wiki/Cambridge%20University%20Press
  22. State Crime: Current Perspectives (Critical Issues in Crime and Society). Rutgers University Press. 28 September 2010. p. 90. ISBN 978-0-8135-4901-9. 
  23. Myres McDouglas (18 August 1994). The International Law of War:Transnational Coercion and World Public Order. Springer. p. 641. ISBN 0-7923-2584-2. 
  24. Wikisource:Ryuichi Shimoda et al. v. The State I. Evaluation of the act of bombing according to international law: Paragraph 6
  25. Wikisource:Ryuichi Shimoda et al. v. The State I. Evaluation of the act of bombing according to international law: Paragraph 7.
  26. Wikisource:Ryuichi Shimoda et al. v. The State I. Evaluation of the act of bombing according to international law: Paragraph 10
  27. Wikisource:Ryuichi Shimoda et al. v. The State I. Evaluation of the act of bombing according to international law: Paragraph 9
  28. Wikisource:Ryuichi Shimoda et al. v. The State I. Evaluation of the act of bombing according to international law: Paragraph 8.
  29. Douglas P. Lackey (1 January 1984). Moral Principles and Nuclear Weapons. Rowman & Littlefield. p. 213. ISBN 978-0-8476-7116-8. https://archive.org/details/moralprinciplesn0000lack/page/213. 
  30. Bill Van Esveld (17 August 2009). Rockets from Gaza: Harm to Civilians from Palestinian Armed Groups' Rocket Attacks. Human Rights Watch. p. 26. ISBN 978-1-56432-523-5. 
  31. Library of Congress (2 October 2007). The Library of Congress World War II Companion. Simon & Schuster. p. 335. ISBN 978-0-7432-5219-5. https://archive.org/details/libraryofcongres0000wagn/page/335. 
  32. History of World War II: Victory and Aftermath. Marshall Cavendish Corporation. 2005. p. 817. ISBN 0-7614-7482-X. https://archive.org/details/historyofworldwa0002unse/page/817. 
  33. The Law of Air Warfare - Contemporary Issues. Eleven International Publishing. 2006. p. 72. ISBN 90-77596-14-3. 
  34. "Treaties, States parties, and Commentaries - Additional Protocol (I) to the Geneva Conventions, 1977 - 51 - Protection of the civilian population". https://ihl-databases.icrc.org/applic/ihl/ihl.nsf/Article.xsp?action=openDocument&documentId=4BEBD9920AE0AEAEC12563CD0051DC9E. 
  35. ICJ: Legality of the threat or use of nuclear weapons http://www.cornnet.nl/~akmalten/unan5a.html
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