what was the main goal of the strategic defense initiative
Strategic Defense Initiative The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (intercontinental ballistic missiles and submarine-launched ballistic missiles). The concept was first announced publicly by President Ronald Reagan on 23 March 1983.[1] Reagan was a vocal critic of the doctrine of mutual assured destruction (MAD), which he described as a "suicide pact", and he called upon the scientists and engineers of the United States to develop a system that would render nuclear weapons obsolete.