The United States and 10 allies say the military cooperation between Russia and North Korea flagrantly violates U.N. sanctions and has helped Moscow increase its missile strikes on Ukrainian cities

The United States, along with 10 of its allies, have accused North Korea and Russia of breaking important United Nations (UN) sanctions through secret military cooperation. These sanctions are international rules designed to stop countries from trading or helping each other with military equipment and weapons when it threatens global peace.

North Korea has sent soldiers and millions of munitions, including missiles and rockets, to Russia over the past year, according to a new report by an international watchdog, which details the extent to which Pyongyang has helped Moscow “terrorize” Ukraine’s population over its three-year war.