On 15 April 1986, the U.S. military under President Reagan launched Operation El Dorado Canyon, a bombing of Tripoli and Benghazi in Libya, from Royal Air Force stations in England with the permission of Prime Minister Thatcher. It was a counter-attack by the United States in response to Libyan state-sponsored terrorism directed towards civilians and American servicemen under Muammar Gaddafi, especially the 1986 West Berlin discotheque bombing.