SEOUL (Reuters) -North Korean leader Kim Jong Un has told the Russian defence minister that Ukraine's use of long-range weapons is the result of direct military intervention by the United States and Moscow is entitled to fight in self-defence, state media said on Saturday.

Russian Defence Minister Andrei Belousov met with North Korean leader Kim Jong Un and agreed to boost military cooperation between the two isolated nations, North Korean state media said.

The United States has information that North Korea is preparing additional supplies of ballistic missiles to Russia, as well as long-range self-propelled artillery and multiple launch rocket systems (MLRS).