The North Atlantic Treaty Organization (NATO) was created in 1949, and it still exists today. Explain its significance in the Cold War at the time that it was created, explain its significance in the current crisis involving Russia, and be clear about the role of the United States in the current crisis, in relation to its membership in NATO

The North Atlantic Treaty Organization (NATO) was created in 1949, and it still exists today. Explain its significance in the Cold War at the time that it was created, explain its significance in the current crisis involving Russia, and be clear about the role of the United States in the current crisis, in relation to its membership in NATO