In the 1980s Powell began espousing the policy of unilateral nuclear disarmament. In a debate on the nuclear deterrent on 3 March 1981, Powell claimed that the debate was now more political than military; that the UK did not possess an independent deterrent and that through NATO the UK was tied to the nuclear deterrence theory of the United States. In the debate on the address shortly after the general election of 1983, Powell picked up on Thatcher's willingness, when asked, to use nuclear weapons as a "last resort". Powell presented a scenario of what he thought the last resort would be, namely that the Soviet Union would be ready to invade the UK and had used a nuclear weapon on somewhere such as Rockall to demonstrate their willingness to use it: