The U.S. military deployed troops to Lebanon during Ronald Reagan's presidency to secure peace between Israel and Palestinian militants. The deployment was part of a multinational peacekeeping force that was established to help end the civil war in Lebanon and to oversee the withdrawal of Palestinian fighters from the country. The goal of the U.S. military was to help restore stability to the region and to prevent further violence between Israeli and Palestinian forces. While the mission was initially successful, it was later derailed by a series of bombings that targeted the multinational force, leading to the withdrawal of U.S. troops from the country.