The United States has blacklisted a network accused of aiding financial payments between Russia and North Korea, two isolated countries that have grown financially and militarily closer amid the Kremlin's war in Ukraine.

MOSCOW (Reuters) - Top Russian security official Sergei Shoigu held talks with North Korean leader Kim Jong Un during a visit to Pyongyang on Friday, Russian news agencies said. The visit took place at a critical juncture in the war in Ukraine, for which the United States says North Korea has supplied ammunition and ballistic missiles to Russia.

The United States has imposed sanctions against individuals and entities involved in illegal financial transactions between Russia and North Korea, according to the US Department of the Treasury. As noted by the agency,