MANILA — United States Defense Secretary Lloyd Austin said on Tuesday the Mutual Defense Treaty between Washington and Manila applies to armed attack in the South China Sea. The behavior of China has been concerning, including more aggressive measures in denying the Philippines access to areas in its exclusive economic zone, Austin said in a press conference. READ: Philippines, United States sign military intelligence-sharing deal | U.

S. Defense Secretary underscores ironclad commitment to Philippines — Reporting by Karen Lema; Editing by Martin Petty.