Russian tankers have smuggled oil to North Korea, a breach of U.N. sanctions - NBC News

Russian tankers have supplied fuel to North Korea on at least three occasions in recent months by transferring cargoes at sea, according to two senior Western European security sources, providing an economic lifeline to the secretive Communist state.....
https://www.nbcnews.com/news/world/russian-tankers-have-smuggled-oil-north-korea-breach-u-n-n833531