PANMUNJOM, Korea: US Vice President Kamala Harris capped her four-day trip to Asia with a stop Thursday at the Demilitarized Zone dividing the Korean Peninsula as she emphasized US commitment to the security of its Asian allies in face of an increasingly aggressive North Korea.

The visit comes on the heels of North Korea's latest missile launches and amid fears that the country may conduct a nuclear test. Visiting the DMZ has become something of a ritual for American leaders hoping to show their resolve to stand firm against aggression.