Haig took the same route to SHAPE every day—a pattern of behavior that did not go unnoticed by terrorist groups. On June 25, 1979, Haig was the target of an assassination attempt in Mons, Belgium. A land mine blew up under the bridge on which Haig's car was traveling, narrowly missing Haig's car and wounding three of his bodyguards in a following car. Authorities later attributed responsibility for the attack to the Red Army Faction (RAF). In 1993 a German court sentenced Rolf Clemens Wagner, a former RAF member, to life imprisonment for the assassination attempt. During Haig's last month of tenure as Supreme Allied Commander Europe, Haig oversaw the talks and negotiation between United States and NATO member nations of a new policy following the signing of SALT II Treaty on June 18, 1979, by President Jimmy Carter and Soviet Premier Leonid Brezhnev. Haig retired from his position as the Supreme Allied Commander Europe in July 1979 and was succeeded by General Bernard W. Rogers.