Report 19830830A


August 30, 1983


Ronald Reagan (First Term)



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

Yes, 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)

No, as described in/inferred from report

Joint/Coalition Mission


Details: "Multinational Force (MNF) requested by the Government of Lebanon"

Article 51 Report to UN

Not applicable because no self-defense claim



Details: Assist Lebanon as part of multinational force "to facilitate the restoration of Lebanese Government sovereignty and authority, and thereby further the efforts of the Government of Lebanon to assure the safety of persons in the area and bring to an end the violence that had tragically recurred."

Domestic Legal Authority

Constitution (Art. II)

Details: "I directed this deployment pursuant to my constitutional authority with respect to the conduct of foreign relations and as Commander-in-Chief of the United States Armed Forces."

Claimed International Legal Basis

Consent of territorial state

Details: As noted in reports of Aug. 24, 1982 and Sept. 29, 1982

Estimated Scope/Duration

Mission-bound but indeterminate

Details: Fighting occurred on August 28, 29, and 30, 1983; "It is still not possible to predict the duration of the presence of these forces in Lebanon..."

Type of Enemy or Mission

Non-state actor

Details: Various armed factions in Southern Beruit

Military Activity

Air operations Use of ground forces

Details: "U.S. Marines of the MNF came under small-arms fire ... and this fire was returned"; "fighting erupted again. Marine positions came under mortar, rocket, and small-arms fire, with the result that two Marines were killed and fourteen wounded"; "U.S. Marines returned fire with artillery, small arms, and, in one instance, rocket fire from a helicopter gunship. There were additional exchanges of fire earlier today ... "

US Casualties Reported


Details: "two Marines were killed and fourteen wounded"

Non-US Casualties Reported