President Harry Truman introduced the Truman Doctrine; similarly, President Ronald Reagan the foreign policy is Reagan Doctrine.
A policy, which is issued by a nation in the regard of maintenance of relations of the government of one country with another country's government, is known as a foreign policy.
The foreign policies by the American Presidents like the Truman Doctrine was in the essence of American relations with the Soviet Union during the Cold War.
The foreign policy of the Reagan Doctrine was also the policy that looked after the situations between America and Afghanistan and Nicaragua, which were backed by the Soviet Union.
Hence, the significance of foreign policies have been aforementioned.
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