Report 20191119A


November 19, 2019


Donald Trump


Saudi Arabia

Was 4(a)(1) Triggered? (Hostilities/Imminent Hostilities)

No, as described in/inferred 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

Joint/Coalition Mission


Article 51 Report to UN

Not applicable because no self-defense claim



Details: "To assure our partners, deter further Iranian provocative behavior, and bolster regional defensive capabilities"

Domestic Legal Authority

Constitution (Art. II)

Details: "I have taken this action consistent with my responsibility to protect United States citizens at home and abroad and in furtherance of United States national security and foreign policy interests, pursuant to my constitutional authority to conduct United States foreign relations and as Commander in Chief and Chief Executive."

Claimed International Legal Basis


Estimated Scope/Duration

Mission-bound but indeterminate

Details: "These personnel will remain deployed as long as their presence is required to fulfill the missions described above."

Type of Enemy or Mission


Details: "Iran and its proxy forces"

Military Activity

Air operations Use of ground forces

Details: "Additional forces ordered to deploy to the Kingdom of Saudi Arabia include radar and missile systems to improve defenses against air and missile threats in the region, an air expeditionary wing to support the operation of United States fighter aircraft from the Kingdom of Saudi Arabia, and two fighter squadrons."

US Casualties Reported


Non-US Casualties Reported