North Korean leader Kim Jong Un again oversaw the test-firing of a "newly developed" weapon, state-run media said Sunday, throwing up yet another obstacle to long-stalled denuclearization talks with the United States.

The official Korean Central News Agency said in a dispatch that Kim had guided the successful test of a "super-large multiple rocket launcher" a day earlier.

The test, which Japan and South Korea said was of two apparent ballistic missiles — a violation of U.N. resolutions — was the latest display of firepower by the nuclear-armed North.