Pentagon of Russian-Turkish alliance in Syria: no comments

Pentagon spokesman Peter Cook declined to comment on the coordination between Russia and Turkey in the fight against ISIS in Syria.

"I'm not aware of specific Turkish-Russian cooperation in al-Bab and I'll leave that to Turkey and Russia to speak to. But one of the reasons we're able to feel confident about what's going on is because of that level of coordination at all levels with the Turkish government, including military to military on the ground.  And we'll continue to have those conversations," he told a press briefing.