The Nuclear Non-Proliferation Treaty went into effect beginning in 1970 for a period of 25 years. In 1995, an international conference C) renewed it permanently.
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The Truman Doctrine<span> had committed the </span>U.S<span> to aid the countries resisting </span>communist<span> aggression, and provided the first step toward what would become known as the Containment </span>Policy<span>.</span>
