December 22, 2013
AdministrationBarack Obama (Second Term)
Was 4(a)(1) Triggered? (Hostilities/Imminent Hostilities)
Insufficient information to infer from report
Was 4(a)(2) Triggered? (Combat- Equipped Introduction)
No, as described in/inferred from report
Was 4(a)(3) Triggered? (Substantial Enlargement)
Yes, described in/inferred from report
Article 51 Report to UN
Not applicable because no self-defense claim
Details: "[C]onduct an operation to evacuate U.S. citizens and personnel"
Domestic Legal AuthorityConstitution (Art. II)
Details: "This action has been directed consistent with my responsibility to protect U.S. citizens both at home and abroad, and in furtherance of U.S. national security and foreign policy interests, pursuant to my constitutional authority to conduct U.S. foreign relations and as Commander in Chief and Chief Executive."
Claimed International Legal BasisUnknown
Details: Activity occurred on Dec. 21, 2013; "After the aircraft came under fire as they approached Bor, the operation was curtailed due to security considerations..."
Type of Enemy or MissionRescue/Evacuation of nationals
Details: Evacuation of U.S. citizens from Sudan
Military ActivityAir operations
Details: "[A]pproximately 46 additional U.S. military personnel deployed by military aircraft to the area of Bor, South Sudan, to conduct an operation to evacuate U.S. citizens and personnel. After the aircraft came under fire as they approached Bor, the operation was curtailed due to security considerations..."
US Casualties Reported
Details: "aircraft and all military personnel onboard departed South Sudan without completing the evacuation"
Non-US Casualties Reported