A joint statement by the United States and its partners on Tuesday condemned arms transfers between North Korea and Russia, including what it termed as Russia's procurement of North Korean ballistic missiles and Moscow's use of those against Ukraine on Dec. 30 and Jan. 2. WHY IT IS IMPORTANTBoth Moscow and Pyongyang have drawn closer since the beginning of the Ukraine conflict, though they deny making any arms deals. North Korean leader Kim Jong Un met President Vladimir Putin in Russia's Far East region last September and senior Russian officials have made several visits to Pyongyang. Last week the White...