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 Korean leader Kim Jong Un reportedly oversaw the test of a supersonic cruise missile fired from a new battleship -- the destroyer Choe Hyon -- this week.

The South Korean military suspects that North Korea may have received technological or financial support from Russia in building the newly launched destroyer, Choe Hyon. Analysts quoted by Newsweek believe it was part of the compensation that Pyongyang provides to Moscow in connection with the war in Ukraine.