The United States stated that military exercises of North Korean troops in Russia violate a number of UN Security Council norms.
State Department spokesman Matthew Miller stated this on October 29.
DPRK military exercises in Russia — US State Department Position
— We believe that Russia's training of DPRK soldiers using weapons or related materials is a direct violation of Security Council resolutions, — he pointed out.
Miller noted that in this vein, Moscow and Pyongyang are violating the UN arms embargo, as well as the import or export ban, which could help the DPRK conduct nuclear tests or launch ballistic missiles.
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The American official emphasized that Washington is consulting with the Ukrainian authorities and allies regarding steps in response to the involvement of North Korean forces in the war on Russia's side.
Also, according to him, multilateral monitoring of sanctions against North Korea continues, and the United States is ready to use the sanctions mechanism both against the DPRK and Russia.