Military Action:
US Marines, Army officers make first reported visit to LAF positions at Souq al-Gharb, gather intelligence, consult on target coordinates; LAF adds 2 battalions to 4 already at Souq al-Gharb, US ships fire 40+ rounds at anti-government artillery and rocket batteries east of Yarze; SAM-5 reportedly fired at US Navy F-14 on reconnaissance flight over Beirut, no damage; Amal militia continues attack on LAF units south of Beirut.
Political Responses:
Israel/ Occupied Territories: IDF reportedly will intervene in Lebanon fighting if PLO seeks to gain foothold south of Damour River line.
US and Other Countries: Reagan administration and Congressional leaders of both parties agree on compromise formula to authorize Marines to remain in Lebanon for further 18 months under War Powers Act, no change in number, role or deployment; US names new ambassadors to Lebanon, Saudi Arabia; Italy positions warplanes at British base on Cyprus to support its MNF contingent; British naval task force begins assembling in eastern Mediterranean.