North Korean leader Kim Jong Un oversaw tests this week of his country’s naval destroyer, claiming Pyongyang is in the process of “arming the Navy with nuclear weapons,” state media reported Thursday.

The tests, including a launch of a sea-to-surface cruise missile, come shortly after Kim led a major once-in-five-years Party Congress, at which he renewed goals of a military buildup and vowed to forcefully respond to any threats.

It also comes as the nuclear-armed North’s key foe — the United States — launched its joint offensive with Israel against Iran, aiming to wipe out the Islamic republic’s nuclear program, missiles and navy.

Kim inspected on Tuesday a “Choe Hyon” class ship — one of two launched last year — and oversaw a “shakedown” or performance test, the Korean Central News Agency (KCNA) reported.

“The arming of the Navy with nuclear weapons is making satisfactory progress,” Kim said, according to KCNA.

“All these successes constitute a radical change in defending our maritime sovereignty, something that we have not achieved for half a century,” he added.

The following day he oversaw the missile launch from the ship, which was “successfully carried out,” KCNA said.

The Choe Hyon is one of two 5,000-ton destroyers in the North’s arsenal, both launched last year as Kim seeks to ramp up the country’s naval capabilities.

A third vessel is under construction, which Kim also visited on Wednesday, according to KCNA.

Pyongyang has previously said the Choe Hyon is equipped with the “most powerful weapons.”