Song Sang-hyun said "the time is right" for Ukraine to file a complaint over North Korea's military assistance to Russia.

They who fought for justice are all heroes and representatives of the honor of the motherland,” Kim Jong Un said.

North Korea’s decision to support Russia’s invasion of Ukraine is part of a “sacred mission” to counter U.S. influence around the world, according to state-run media.

Russia and Ukraine began a major prisoner exchange Friday, swapping hundreds of soldiers and civilians in the first phase of an exchange that was a moment of cooperation in otherwise failed efforts to reach a ceasefire in the 3-year-old war.

On Tuesday, South Korean military officials announced that North Korea likely received help from Russia to develop a new air-to-air missile — a missile fired from an aircraft to destroy another aircraft — which is the kind of advanced weaponry that South Korea is attempting to build by 2032.

A cyberespionage group linked to North Korea’s military has targeted government organizations in Ukraine since February in what appears to be an intelligence gathering operation.

Russia has announced that its troops have fully reclaimed the Kursk region, nearly nine months after losing chunks of the border territory to a surprise Ukrainian incursion.

North Korean leader Kim Jong-un on Friday defended his country's participation in the Russia-Ukraine war as an "exercise of its sovereign rights," according to media reports. Kim made the remarks during a visit to the Russian Embassy in Pyongyang to mark the 80th anniversary of Russia's Victory Day, Yonhap News Agency reported on Saturday.