The Geneva Conventions apply at times of war and armed conflict to governments who have ratified its terms. The details of applicability are spelled out in Common Articles 2 and 3.
Common Article 2 relating to international armed conflict (IAC) Common Article 2 states that the Geneva Conventions apply to all the cases of
international armed conflict (IAC), where at least one of the warring nations has ratified the Conventions. Primarily: • The Conventions apply to all cases of
declared war between signatory nations. This is the original sense of applicability, which predates the 1949 version. • The Conventions apply to all cases of armed conflict between two or more signatory nations. This language was added in 1949 to accommodate situations that have all the characteristics of war without the existence of a formal declaration of war, such as a
police action. The
International Committee of the Red Cross has explained that this language describes non-international armed conflict (NIAC) "where at least one Party is not a State." For example, it would apply to conflicts between state forces and
non-state actors (NSAs), or between two NSAs, or to other conflicts that have all the characteristics of war, whether carried out within the confines of one country or not. There are two criteria to distinguish non-international armed conflicts from lower forms of violence. The level of violence has to be of certain intensity, for example when the state cannot contain the situation with regular police forces. Also, involved non-state groups need to have a certain level of organization, like a military command structure. The other Geneva Conventions are not applicable in this situation but only the provisions contained within Article 3, During the negotiation of the Geneva Conventions, France and Britain were initially staunchly opposed to Common Article 3. However, to save face during negotiations and make strategic concessions, France and Britain deliberately introduced ambiguous language in the text of Common Article 3 that made it easy for states to avoid the obligations of the rule. As a consequence, Common Article 3 only concerns with humane treatment and does not deal with methods and means of hostilities, such as bombings committed by non-state armed groups or state forces against civilian targets in the
Algerian War and
the Troubles. On 7 February 2002, President Bush adopted the view that Common Article 3 did not protect
al Qaeda prisoners because the United States-al Qaeda conflict was not "not of an international character." The
Supreme Court of the United States invalidated the Bush Administration view of Common Article 3, in
Hamdan v. Rumsfeld, by ruling that Common Article Three of the Geneva Conventions applies to detainees in the "War on Terror", and that the
Guantanamo military commission process used to try these suspects was in violation of U.S. and international law. In response to
Hamdan, Congress passed the
Military Commissions Act of 2006, which President Bush signed into law on 17 October 2006. Like the
Military Commissions Act of 2006, its successor the
Military Commissions Act of 2009 explicitly forbids the invocation of the Geneva Conventions "as a basis for a private right of action." ... Common Article 3 continues the conventional practice (reflected in both the 'Lieber' and 'The Hague' provisions) of according humanitarian protections only to 'belligerents' who defer to the
laws and customs of war: not to 'insurrectionists' who defy these norms from the very outset of hostilities. Observance of the rules of warfare is what elevates an 'insurrectionist' to the legally cognizable status of 'belligerent' under the 'International law of war'; nothing short of such an 'observance' suffices to effect this transformation from the
infra legal to
legal.
IAC or NIAC classification Whether the conflict is an IAC or a NIAC or both depends on the nature and circumstances of the situation. Since there is a general prohibition against the use of force between States (as is reflected within article 2(4) of the
United Nations Charter) with respect to Common Article 2, it is generally presumed that any use of such military force which is governed by
international humanitarian law is attributable to deliberate belligerent intent. Regarding Common Article 3, the
International Committee of the Red Cross in its 2016 commentary stated the provision includes not just a conflict between territorial government forces and NSAs or NSAs themselves, but also a foreign military intervention against a NSA
only if the territorial state consents to such intervention in its territory. Should the intervening country do so without the consent of the territorial state or in support of a NSA against that state, then Common Article 2 applies. For example,
U.S. intervention in the Syrian civil war became both an IAC with
Syria and a NIAC with the
Islamic State because the U.S. intervened in Syrian territory without the former's consent. The
U.S.-led NATO invasion of Afghanistan from October 7 to December 17, 2001, was initially an IAC because it waged war against the
Islamic Emirate of Afghanistan under
Taliban rule. Once the new
Karzai administration was established and recognized internationally, the conflict changed from an IAC to a NIAC, with NATO troops under
International Security Assistance Force (ISAF) and
Resolute Support Mission (RSM) auspices assisting the
Islamic Republic of Afghanistan with its consent in battling Taliban insurgents. While non-state armed groups are automatically presumed to engage in NIACs, they also can cross into the threshold of an IAC. The 2020 ICRC commentary on the Third Geneva Convention requires two elements for this classification: "the group must in fact fight on behalf of that Party" and "that Party must accept both the fighting role of the group and the fact that the fighting is done on its behalf." It further states that "[w]here a Party to a conflict has overall control over the
militia, volunteer corps or organized
resistance movement that has a fighting function and fights on the State's behalf, a relationship of belonging for the purposes of Article 4A(2) exists." For example, the
Viet Cong was under effective control and direction by
North Vietnam during the
Vietnam War, therefore Common Article 2 solely applied to the conflict. == Grave breaches of the Geneva Conventions ==