North Korea has continued to supply advanced short-range ballistic missiles to Russia in defiance of sanctions meant to prevent Pyongyang from developing such weapons and Moscow from importing them, according to a report by a weapons research group.

Remnants of four of the missiles, which are called Hwasong-11, were examined in Kyiv on Sept. 3 by investigators from Conflict Armament Research, an independent group based in Britain that identifies and tracks weapons and ammunition used in wars around the world.

That team decoded production markings on several parts from each missile collected by Ukrainian authorities.