Secretary of Defense Ash Carter said Sunday that Russia has done nothing in the fight against the Islamic State of Iraq and Syria (ISIS).

“They haven’t done anything,” Carter told NBC’s “Meet the Press.”

Carter said Russia’s efforts in the war against ISIS are “virtually zero.”

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Russia began its military intervention in the Syrian civil war in September of 2015. Since then, Russia has aided the Syrian government with airstrikes as it works to take back territory from opposition groups.

“They came in, they said they were going to fight ISIL, and they said they were going to help in the civil war in Syria,” Carter said, using another acronym for the terrorist organization.

“They haven’t done either of those things. As a consequence of course, we’re fighting ISIL ourselves.”