SEOUL, South Korea (AP) — North Korea said Wednesday leader Kim Jong Un observed the test-firings of missiles from a recently launched destroyer — the first such warship for the North — and called for accelerating efforts to boost his navy’s nuclear attack capabilities.

North Korea earlier this week conducted the first test-firing of the weapons system of the new "Choe Hyon-class" warship it recently unveiled, state media KCNA reported on Wednesday.

North Korea unveiled the warship last week, and Kim said it was a significant advancement toward his goal of expanding the operational range and preemptive strike capabilities of his nuclear-armed military.