USA HISTORY

Detailed explanation-1: -The SDI was intended to defend the United States from attack from Soviet intercontinental ballistic missiles (ICBMs) by intercepting the missiles at various phases of their flight. For the interception, the SDI would require extremely advanced technological systems, yet to be researched and developed.

Detailed explanation-2: -SDI also failed to dissuade the Soviet Union from investing in development of ballistic missiles. The Soviet Union quickly identified ways to avoid a technological arms race with the United States and focused on development of advanced missiles and anti-satellite systems to counter missile defenses.

Detailed explanation-3: -SDI failed to dissuade the USSR from investing in development of ballistic missiles. The Soviet response to the SDI during the period of March 1983 through November 1985 provided indications of their view of the program both as a threat and as an opportunity to weaken NATO.

Detailed explanation-4: -The Strategic Defense Initiative was an anti-ballistic missile program that began under American president Ronald Reagan during the 1980s. The goal of the program was to establish a shield in space that would intercept any incoming missiles.