SEOUL, South Korea (AP) — With Seoul expecting another North Korean missile test, South Korean warships conducted live-fire exercises at sea on Tuesday in a second straight day of military swagger from a nation still rattled by the North's biggest-ever nuclear test.

The test on Sunday, which North Korea said was a hydrogen bomb, was a huge advance in the North's push for nuclear-tipped missiles capable of hitting the United States. It has also resulted in South Korea boosting its own military capabilities. Washington and Seoul agreed to lift restrictions on South Korean missiles they'd previou...