Report comes a day before US President Donald Trump’s summit with his South Korean counterpart, Lee Jae-myung, in Washington, DC.

North Korean leader Kim Jong Un has overseen the firing of two new air defence missiles, state media reported, announcing that the tests showed the weapons had “superior combat capability”.

The report on Sunday comes a day before United States President Donald Trump meets his South Korean counterpart, Lee Jae-myung, in Washington, DC.

North Korea’s Korean Central News Agency (KCNA) said the tests, which took place on Saturday, showed that the missiles demonstrated a “fast response” to aerial targets such as attack drones and cruise missiles.

The report did not explain the new missiles in any detail, only that their “operation and reaction mode is based on unique and special technology”.

It also did not say where the test had been carried out.

The launches also come as South Korea and the US continue their annual joint military drills and as the South Korean military announced that it had fired warning shots at several North Korean soldiers who had briefly crossed their heavily militarised border on Tuesday.

The United Nations Command in South Korea put the number of North Korean troops that crossed the border at 30, the Yonhap news agency reported.

North Korean state media, meanwhile, quoted Army Lieutenant General Ko Jong Chol as saying the incident was a “premeditated and deliberate provocation”.

“This is a very serious prelude that would inevitably drive the situation in the southern border area, where a huge number of forces are stationing in confrontation with each other, to the uncontrollable phase,” Ko said.

Earlier this month, Kim condemned the US-South Korea joint military drills as their intent to remain “most hostile and confrontational” to his country, pledging to speed up nuclear build-up.

South Korea’s new leader, Lee, has sought warmer ties with the nuclear-armed neighbour, and has promised to build “military trust”, but Pyongyang has said it has no interest in improving relations with Seoul.