...Another might be an
instance where there is US sovereign complicity in the violation outside of the territorial United States, for
instance, where a US or alien subcontractor, acting under U.S. governmental authority or authorization, has violated specific, universal, and obligatory customary international law norms (e.g., Common Article III) by enhanced interrogation techniques employed against an alien plaintiff in a foreign sovereign territory. Finally, perhaps, as with piracy on the high seas, ATS claims may be possible in terra nullius circumstances, such as where acts have occurred in failed states....