UK-USA Mutual Defence AgreementDefence Agreement • July 30th, 2004
Contract Type FiledJuly 30th, 2004The Agreement between the UK and the USA for Cooperation in the Uses of Atomic Energy for Mutual Defence Purposes 1958, also known as the Mutual Defence Agreement (MDA), allows the USA and the UK to exchange nuclear materials, technology and information. It was the result of an amendment to post-War US non-proliferation law, which exempted allies that had made substantial progress in developing nuclear weapons from the general ban on exchanges that might lead to nuclear proliferation.