Letter for the Speaker of the House of Representatives and the President Pro Tempore of the Senate from the President (June 15, 2020) (reporting that the armed forces, with the assistance of numerous international partners, continue to conduct operations “against al-Qa’ida terrorists,” and that the United States has “deployed combat-equipped forces to a number of locations in the U.S. Central… Command area[] of operation in support of those [overseas counter-terrorist] operations”); Bensayah v. Obama, 610 F. 3d 718, 720, 724–5, 727 (D.C. Cir. 2010) (concluding that an individual turned over to the United States in Bosnia could be detained if the government demonstrated he was part of al-Qa’ida); al-Adahi v. Obama, 613 F. 3d 1102, 1003, 1111 (D.C. Cir. 2010) (noting authority under AUMF to detain individual apprehended by Pakistani authorities in Pakistan and then transferred to U. S. custody).
Claiming that for purposes of international law, an armed conflict generally exists only when there is “protracted armed violence between governmental authorities and organized armed groups,” Prosecutor v. Tadic, Case No. IT-94-1AR72, Decision on the Defence Motion for Interlocutory Appeal on Jurisdiction, ¶ 70 (Int’l Crim. Trib. for the Former Yugoslavia, App. Chamber Oct. 2, 1995), some commenters have suggested that the conflict between the United States and al-Qa’ida cannot lawfully extend to nations outside Afghanistan in which the level of hostilities is less intense or prolonged than in Afghanistan itself. See, e.g., Mary Ellen O’Connell, Combatants and the Combat Zone, 43 U. Rich. L. Rev. 845, 857–59 (2009). There is little judicial or other authoritative precedent that speaks directly to the question of the geographic scope of a non-international armed conflict in which one of the parties is a transnational, non-state actor and where the principal theater of operations is not within the territory of the nation that is a party to the conflict. Thus, in considering this potential issue, the Department looks to principles and statements from analogous contexts.
The Department has not found any authority for the proposition that when one of the parties to an armed conflict plans and executes operations from a base in a new nation, an operation to engage the enemy in that location cannot be part of the original armed conflict, and thus subject to the laws of war governing that conflict, unless the hostilities become sufficiently intense and protracted in the new location. This does not appear to be the rule of historical practice, for instance, even in a traditional international conflict. See John R. Stevenson, Legal Adviser, Department of State, United States Military Action in Cambodia: Questions of International Law, Address before the Hammarskjold Forum of the Association of the Bar of the City of New York (May 28, 1970), in 3 The Vietnam War and International Law: The Widening Context 23, 28–30 (Richard A. Falk, ed. 1972) (arguing that in an international armed conflict, if a neutral state has been unable for any reason to prevent violations of its neutrality by the troops of one belligerent using its territory as a base of operations, the other belligerent has historically been justified in attacking those enemy forces in that state). Particularly in a non-international armed conflict, where terrorist organizations may move their base of operations from one country to another, the determination of whether a particular operation would be part of an ongoing armed conflict would require consideration of the particular facts and circumstances in each case, including the fact that transnational non-state organizations such as al-Qa’ida may have no single site serving as their base of
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