The North Korean leader has said his country must continue bolstering its strategic deterrent North Korea must continue to build up its strategic missile arsenal due to the threat posed by US nuclear weapons, the country’s leader, Kim Jong-un, has said. Tensions between North and South Korea, which have technically remained at war since 1953, have further escalated in recent months. Earlier in October, Pyongyang accused Seoul of deploying drones over its territory to drop propaganda leaflets.