Russia conducted strikes on ISIS targets in Syria using new cruise missiles launched from naval vessels similar in design to the American Tomahawk Missile platform on Tuesday.

According to a statement provided by the Russian Ministry of Defense, the cruise missiles were launched at militant ISIS “shelters” east of the ancient city of Palmyra.  The shelters reportedly held heavy equipment and ISIS personnel transferring from the self-proclaimed capital of the Islamic State, Raqqa.

The Admiral Essen frigate and Krasnodar submarine of the Russian Navy conducted strikes by four Kalibr cruise missiles on objects of the ISIS terrorist grouping near Palmyra from the eastern part of the Mediterranean Sea,” the Ministry statement said. “All targets have been hit.”

The statement went on to state that the strike “confirmed the high combat readiness of the Russian Navy forces,” before noting that the US, Turkey and Israel were all informed of the strikes at the “appropriate time.”