During the Cold War, the term "weapons of mass destruction" was primarily a reference to nuclear weapons. Atthe time, as anecessary deterrent against nuclear or conventional attack from the Soviet Union (see Mutual Assured Destruction), and the euphemism "strategic weapons" was used to refer to the American nuclear arsenal. The term "weapons of mass destruction" continued to see periodic use throughout this time, usually in the context of nuclear arms control; Ronald Reagan used it during the 1986 ReykjavÃk Summit, when referring to the 1967 Outer Space Treaty.[4] Reagan's successor, George H.W. Bush, used the term in an1989 speech to the United Nations, using it primarily in reference to chemical arms. The end of the Cold War reduced U.S. reliance on nuclear weapons as a deterrent, causing it to shift its focusto disarmament. This periodcoincided with an increasing threat to U.S. interests from Islamic nations and independent Islamic groups. With the 1990 invasion of Kuwait and 1991 Gulf War, Iraq's nuclear, biological, and chemical weapons programs became a particular concern of the first Bush Administration. Following the war, the Clinton Administration and other western politicians and media continued to use the term, usually in reference to ongoing attempts to dismantle Iraq's weapons programs.