The Mutual Defense Treaty between the Republic of the Philippines and the United States of America (MDT) was signed on August 30, 1951 by their representatives in Washington, D.C. The treaty has eight articles and requires both nations to support each other if another party attacks the Philippines or the United States.
The Philippines became a US territory after the Spanish–American War and the subsequent Philippine–American War. In 1935, under the terms of the Tydings–McDuffie Act, the Philippines became a self-governing commonwealth, the Philippine Commonwealth, with full independence planned for ten years later. Delayed by World War II and the Japanese invasion and occupation of the Philippines, the Philippines became fully independent on July 4, 1946. Following independence, a strong American military presence remained, including a number of United States military bases in the Philippines that were allowed by treaties between the countries. There were also treaties that created a strong bond between them that gave both countries rights not enjoyed by other nations. The Mutual Defense Treaty Between the Republic of the Philippines and the United States of America was signed on August 30, 1951, in Washington, D.C. between representatives of the Philippines and the United States.