Leaders from Japan and the Philippines are set to meet in Washington for a trilateral summit aimed at strengthening defense ties. This follows recent military drills in the South China Sea involving the US, Japan, the Philippines, and Australia, which drew criticism from Beijing. Discussions are expected to include upgrading military command structures between the US and Japan, joint coast guard patrols, securing vital supplies, and addressing North Korea's actions. The talks aim to enhance the Indo-Pacific region's security and promote a free and open environment.