Washington announced last week that it would provide the widely-banned munitions to Ukraine for their counteroffensive against invading Russian troops.

"The U.S. has made a very dangerous choice by deciding to offer such lethal weapons to Ukraine," said North Korean foreign minister Choe Son Hui in a statement carried by the official Korean Central News Agency.

The move "brings to light once again its true colors as destroyer of peace regarding aggression and massacre as its national policy and mode of existence", she said.

Choe went on to demand Washington halt its plans.

Adding that the North Korean government and its people "extend firm support and solidarity" to Russia, she said Moscow would achieve victory in the end.

It was the latest message of support from Pyongyang to Moscow since the beginning of the fighting in Ukraine, which it has described as a US "proxy war" to destroy Russia.

As a permanent member of the UN Security Council, Russia has long held the line against increasing pressure on North Korea, which is under wide-ranging UN and Western sanctions over its nuclear weapons and missile programmes.