"Their accuracy, in principle, is not very high. We understand that the technologies by which they were manufactured are outdated," Andrii Cherniak, a military intelligence spokesperson, told Radio Free Europe/Radio Liberty.

Pyongyang will "invariably support" Moscow, North Korea's supreme leader, Kim Jong-un, told a visiting Russian delegation last week.

Vladimir Putin is dragging Asia into the war in Ukraine with the use of Chinese-made drones and North Korean troops, German Foreign Minister Annalena Baerbock has said during a visit to Beijing. She stressed the responsibility of permanent members of the UN Security Council, such as China, not to further fuel conflicts with their support.