Biden Sends Sullivan to Tokyo for Talks with Asian Officials.

White House national security adviser Jake Sullivan will travel to Tokyo this week for talks with his counterparts from Japan, Philippines, and South Korea. The visit comes after U.S., Japanese, and Philippine coast guard ships staged law enforcement drills in waters near the disputed South China Sea earlier this month. The U.S. has stepped up efforts to reinforce alliances in Asia amid an increasingly tense rivalry with China. Sullivan's visit aims to deepen collaboration on a number of key regional and global issues.