The Central Intelligence Agency aka the (CIA)
President Carter brokered a historic peace treaty between Egypt and Israel, ending thirty years of hostilities. President Anwar el-Sadat of Egypt and Prime Minister Menachem Begin of Israel signed the final peace treaty in March 1979.
The main way in which the Seven Years War did this was because although the war technically ended in a British Victory, the British suffered heavy losses--meaning that the colonists saw that the British were at least somewhat militarily vulnerable.