The U.S. has sanctioned more Russian companies and cargo ships in an effort to “disrupt” alleged weapons trade with North Korea, the State Department announced Tuesday.

One ship named Maria is the final vessel Washington has sanctioned out of four that NK News has identified as involved in a new Russia-North Korea shipping operation ongoing since August. The U.S. says the operation involves trade of DPRK “military equipment and munitions.”

The State Department said in a press releasethat the designations “promote accountability for Russia’s crimes in Ukraine and those who finance and support Russia’s war machine,” while “disrupting Russia-DPRK