Donald Trump is working hard to alienate yet another strategic partner.

By Derek Grossman, a professor of political science and international relations at the University of Southern California.

U.S. Defense Secretary Pete Hegseth speaks at the Shangri-La Dialogue conference in Singapore on May 30.

U.S. Defense Secretary Pete Hegseth speaks at the Shangri-La Dialogue conference in Singapore on May 30. JAM STA ROSA / AFP via Getty Images

Geopolitics