U.S. Secretary of State Rex Tillerson signaled a tougher strategy toward North Korea last week, leaving open the possibility of pre-emptive military action and rejecting talks with the communist nation until it gives up its weapons of mass destruction. Tillerson was speaking after visiting the heavily militarized border between the rival Koreas. The next day he visited Beijing, where he pushed for closer China-U.S. cooperation on dealing with North Korea’s nuclear program in his first face-to-face talks with top Chinese diplomats.

In other images from the Asia-Pacific region last week, ousted South Korean…