"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 We understand that the technologies by which they were manufactured are outdated," Andrii Cherniak, a military intelligence spokesperson, told Radio Free Europe/Radio Liberty.

Ukraine does not have the means to "turn the tables" in the war and will lose if it carries on like it is now, former Ukrainian foreign minister Dmytro Kuleba has said. Meanwhile, reports suggest Russia has fired 60 North Korean missiles during the conflict.

Ukraine has been hit by a surge in Russian ballistic missile attacks, about a third of which used North Korean weapons that can only fly because they run on Western circuitry, obtained despite sanctions,