In February 1946, George F. Kennan's “Long Telegram” from Moscow helped articulate the U.S. government's increasingly hard line against the Soviets and became the basis for the U.S. “containment” strategy toward the Soviet Union for the duration of the Cold War.
The Truman Doctrine demonstrated that the United States would not return to isolationism after World War II, but rather take an active role in world affairs. To help rebuild after the war, the United States pledged $13 billion of aid to Europe in the Marshall Plan.
Answer: In February 1946, George F. Kennan's transmission from Moscow was published in the Kennan-Roosevelt Telegram, which is now known as the Kennan-Roosevelt Telegram.
Explanation: Kennan's "Long Telegram" was the cornerstone of the United States' "containment" strategy against the Soviet Union for the duration of the Cold War.
