The Philippines' oldest ally is the United States. Bound by a mutual defense treaty more than 70 years old, the two nations are aligning against China's aggressive behavior in the vitally important South China Sea. If the presidency of Rodrigo Duterte marked a low point in relations, new president Ferdinand Marcos Jr. is renewing the alliance with the U.S. while also courting other nations in the Indo-Pacific and Europe in an anti-China coalition. In this episode, The Washington Times Asia bureau chief Andrew Salmon and U.S. Institute of Peace senior expert Brian Harding discuss the up and down history of the alliance and the importance of keeping the South China Sea from becoming a Chinese lake.