Putin threatens to arm North Korea, escalating tension with West over Ukraine

Russian President Vladimir Putin shakes hands with North Korean leader Kim Jong Un Wednesday, during his visit to Pyongyang, North Korea. (KCNA /via REUTERS)

President Vladimir Putin of Russia directly warned the United States and its allies that he is willing to arm North Korea if they continue to supply Ukraine with sophisticated weapons that have struck Russian territory, raising the stakes for the Western powers backing Ukraine.