United States

Soviet Ambassador to the US, Nikolai Novikov, describes the advent of a more assertive US foreign policy. Novikov cautions the Soviet leadership that the Truman administration is bent on imposing US political, military and economic domination around the world. This telegram has, since its discovery in the Russian archives, been labelled the Soviet equivalent of US Ambassador to the Soviet Union George Kennan's "Long telegram."

Truman's statement on the invasion of South Korea by North Korean forces.

George F. Kennan writes to the Secretary of State with a lengthy analysis of Soviet policy in an attempt to explain their recent uncooperative behavior. This message would later become famous as the "long telegram."

The United States and China pledge to improve relations with one another in the famous "Shanghai Communique."

On US national security policy at the beginning of the Cold War. Includes an assessment of the conflict between the United States and the Soviet Union, as well as US and Soviet nuclear weapons capabilities.