Explainer-What weapons could North Korea send to Russia?

FILE PHOTO: State flags of Russia and North Korea fly in a street near a church during the visit of North Korea's leader Kim Jong Un to Vladivostok, Russia April 25, 2019. REUTERS/Yuri Maltsev

Russia could be about to buy millions of artillery shells and rockets from old Cold-War ally North Korea, the White House said, an allegation immediately dismissed as "fake" by Russia's ambassador to the United Nations.

North Korea has a long history of exporting weapons - many of which are based on Soviet or Russian designs - and could provide Russia with a range of conventional small arms, experts said.