 With the U.S. Marines looking ready to withdraw, Syrian Arab Republic and Muslim groups stepped up pressure on Amine Gemayel.On 5 March 1984, as a result of the Intifada and the parallel Mountain War the Lebanese Government canceled the 17 May Agreement, and the Marines departed a few weeks later.The violence ended in December 1985 with tripartite Damascus agreement of December 1985 between the Lebanese Forces, Amal and the Progressive Socialist Party (PSP).