After nearly 3 months of fighting. an agreement was reached allowing troops from France. Italy. and the United States to enter Lebanon and act as a peacekeeping force. All of us were relieved when the U.S. contingent of 300 marines left Lebanon last month with no casualties. their mission successfully completed. Unfortunately. following news of the tragic killing in the Palestine refugee camps last week. our marines were again called upon to enter Beirut to assist the French and Italians in peacekeeping efforts and to protect the civilian population. As we are painfully aware. yesterday a young Virginia marine. Corp.