CHRONOLOGY

• – Franklin Roosevelt dies; Vice President Harry Truman becomes president.

• – George F. Kennan drafts containment policy.
• – United States grants independence to the Philippines.

• – National Security Act.
• – Truman announces Truman Doctrine.
• – U.S. aid to Greece and Turkey.

• – Marshall Plan is approved.
• – United States recognizes Israel.

• – Berlin crisis and airlift.

• – Communists take over China.
• – North Atlantic Treaty Organization (NATO) is formed.
• – Soviet Union explodes atomic bomb.
• – Truman approves development of hydrogen bomb.

• – U.S. occupation of Japan ends.