The Containment Strategy was the principal strategy adopted by the US in foreign policy matters during the Cold War era.
It aimed to stop the expansion of the national enemy: communism, and in turn, of the URSS and the countries under its influence, that were denominated the Eastern Bloc. It consisted on responding to any attempt of expansion performed by the URSS, seeking to spread communism in Eastern Europe, Korea, China Africa, Vietnam, and Latin America.
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As much as i know they weren't pursuing a closer relation with them, as they were de-facto enemies in the Cold war (1947-1991)
The Romans invented a law code detailing the rights and duties of citizens and defined the legal process.
The legal system we use today is very mostly based on Roman laws. They included the rights and duties of citizens which did in fact define the legal process and is widely used in common law. The Western governments used many Roman law ideas and it outlines how we deal with law today.