Ukraine believes Russia shared jet-drone technology with North Korea, says Zelensky. Ukrainian President Volodymyr Zelensky said on Sunday he believed Russia may have shared jet-drone technology with its long-standing ally North Korea. In recent weeks, Russia has sharply increased its use of jet-drones against Ukraine, which so far has no effective means of countering them other than using combat aircraft. Earlier in the war, North Korea supplied Russia with millions of artillery shells and it.