Jus ad bellum

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Jus ad bellum (Latin for "right to war") is a set of criteria that are to be consulted before engaging in war in order to determine whether entering into war is permissible, that is, whether it is a just war.

Definition[edit]

Jus ad bellum is sometimes considered a part of the laws of war, but the term "laws of war" can also be considered to refer to jus in bello, which concerns whether a war is conducted justly (regardless of whether the initiation of hostilities was just). Jus ad bellum refers to "legitimate reasons a State may engage in war." [1] These rules focus on certain criteria for what makes a war just.[2]

Article 51 of the UN Charter clarifies: "Nothing in the present Charter shall imair the inherent right of individual or collective self-defense if an armed attack occurs against a Member of the United Nations."[3]

An international agreement limiting the justifiable reasons for a country to declare war against another is concerned with jus ad bellum. In addition to bilateral non-aggression pacts, the twentieth century saw multilateral treaties defining entirely new restrictions against going to war. The three most notable examples are the Kellogg-Briand Pact outlawing war as an instrument of national policy, the London Charter (known also as the Nuremberg Charter) defining "crimes against peace" as one of three major categories of international crime to be prosecuted after World War II, and the United Nations Charter, which binds nations to seek resolution of disputes by peaceful means and requires authorization by the United Nations before a nation may initiate any use of force against another, beyond the inherent right of self-defense against an armed attack.[4]

By contrast, agreements defining limits on acceptable conduct while already engaged in war are considered "rules of war" and are referred to as the jus in bello. Thus, the Geneva Conventions are a set of "jus in bello". Doctrines concerning the protection of civilians in wartime, or the need for "proportionality" when force is used, are addressed to issues of conduct within a war, but the same doctrines can also shed light on the question of when it is lawful (or unlawful) to go to war in the first place.

Principles of jus ad bellum[edit]

Proper authority and public declaration[edit]

The principle of right authority suggests that a war is just only if waged by a legitimate authority. Such authority is rooted in the notion of state sovereignty.[5] In his Summa Theologica St. Thomas Aquinas notes that to be a just war, war has not only to be declared publicly, but also must be declared by the proper authority.[6]

Proper authority is what differentiates war from murder: "It is the rules of warfare that give the practice meaning, that distinguish war from murder and soldiers from criminals" [7] A soldier is treated as a prisoner of war (POW) and not a criminal because they are operating under the proper authority of the state and cannot be help individually responsible for actions committed under the orders of their military leadership.

Just cause / right intention[edit]

According to the principle of right intention, the aim of war must not be to pursue narrowly defined national interests, but rather to re-establish a just peace. This state of peace should be preferable to the conditions that would have prevailed had the war not occurred. Wars cannot be fought simply to annex property or install a regime change. Current doctrines of "anticipatory self-defense" or preemptive strikes, commonly called the Bush Doctrine, have challenged concepts of right intention/just cause.

Right cause includes humanitarian intervention, particularly when actions "shock the conscience." The responsibility to protect covers more in depth the nature of humanitarian intervention.

Probability of success[edit]

According to this principle, there must be good grounds for concluding that aims of the just war are achievable.[5] This principle emphasizes that mass violence must not be undertaken if it is unlikely to secure the just cause.[8] This criteria is to avoid invasion for invasion's sake and links to the proportionality criteria. One cannot invade if there is no chance of actually winning. However, wars are fought with imperfect knowledge, so one must simply be able to make a logical case that one can win; there is not way to know this in advance.

This is a criteria that begins to move the conversation from moral/theoretical grounds to practical grounds.[9] Essentially, this is meant to gather coalition building and win approval of other state actors.

Proportionality[edit]

The principle of proportionality stipulates that the violence used in the war must be proportional to the military objectives. This objective is meant to preclude "scorched earth" policies. The level of military victory must be proportional to the level of destruction that ensues. For example, if there is one enemy combatant in a shopping plaza full of 400 civilians, it would not be considered proportional to the blow up the plaza. However, if there is a high value military target in an area with far fewer civilians (a car or a private home) an attack and the collateral damage may be consider justifiable under the rule of proportionality.

Last resort[edit]

The principle of last resort stipulates that all non-violent options must first be exhausted before the use of force can be justified. Diplomatic options, sanctions, and other non-military methods must be attempted or validly ruled out before the engagement of hostilities. Further, in regard to the amount of harm—proportionally—the principle of last resort would support using small intervention forces first and then escalating rather than starting a war with massive force such as carpet bombing or nuclear attacks.[10]

History[edit]

St. Thomas Aquinas is one of the earliest philosophers on what makes a just war. His list of criteria were intended to protect civilians and guarantee that wars were not just fought for the interest of private parties.[11][12]

After the Peace of Westphalia which ended the Thirty Years' War, scholars became concerned with finding a way to control interstate war while respecting State sovereignty.[11][13]

It wasn’t until the formation of the United Nations after World War II that notions of jus ad bellum were formalized.

The Modern era[edit]

Since the 1950s, declarations of jus ad bellum have dropped dramatically.[14] In "Why States No Longer Declare War" Tanisha Fazal notes the drop in formal declarations of war since the 1950.[15] This may be as a result of the nuance of war in modern times, given the rise of non-state actors such as terrorist groups. It may also

This may be for several reasons, including the rise of armed conflicts between state and nonstate actors such as terrorist groups.

The Bush Doctrine[edit]

More recently, jus ad bellum has given way to the Bush Doctrine's notion of the pre-emptive strike.[16]

See also[edit]

References[edit]

  1. ^ Nabulski, K. (2007). "Jus ad Bellum/Jus in Bello." Crimes of War 2.0. http://www.crimesofwar.org/a-z-guide/jus-ad-bellum-jus-in-bello/
  2. ^ ibid
  3. ^ http://www.un.org/en/sections/un-charter/chapter-vii/
  4. ^ "Charter of the United Nations: Chapter VII: Action with Respect to Threats to the Peace, Breaches of the Peace and Acts of Aggression". Retrieved 2014-08-22. 
  5. ^ a b Don Hubert and Thomas G. Weiss et al. The Responsibility to Protect: Supplementary Volume to the Report of the International Commission on Intervention and State Sovereignty. (Canada: International Development Research Centre, 2001)
  6. ^ Rochester, J. M. (2016). The New Warfare. https://www.amazon.com/New-Warfare-Rethinking-International-Intensives/dp/1138191892
  7. ^ Finnemore, M. (1999). Rules of war and wars of rules: The international red cross and the restraint of state violence. In Constructing world culture: International nongovernmental organizations since 1875. Eds. John Boli and George Thomas, Stanford: Stanford UP, 149-165.
  8. ^ "War (Stanford Encyclopedia of Philosophy)". Retrieved 2014-08-27. 
  9. ^ Seybolt, Taylor B. "Humanitarian Military Intervention: The Conditions for Success and Failure." Oxford: Oxford UP, 2007.
  10. ^ https://www.ethicsandinternationalaffairs.org/2015/just-war-theory-last-last-resort/
  11. ^ a b Rochester
  12. ^ http://www.catholiceducation.org/en/culture/catholic-contributions/the-church-s-just-war-theory-part-1.html
  13. ^ https://www.britannica.com/event/Peace-of-Westphalia
  14. ^ Fazal, T. (2012). "Why States No Longer Declare War." Security Studies, 21 (4), pgs. 557-593. http://www.tandfonline.com/doi/abs/10.1080/09636412.2012.734227?journalCode=fsst20
  15. ^ Fazal
  16. ^ Byers, M. (2005). War Law: Understanding International Law and Armed Conflict. New York: Grove. http://www.groveatlantic.com/?title=War+Law

Further reading[edit]