সঠিক উত্তর হচ্ছে: Containment Doctrine এর প্রবক্তা
ব্যাখ্যা: Containment was a foreign policy strategy followed by the United States during the Cold War. First laid out by George F. Kennan in 1947, the policy stated that communism needed to be contained and isolated, or else it would spread to neighboring countries.\n[Source: Canadian Journal of History ]