"We have to do one thing at a time. We can't be fighting ISIS and fighting [Bashar]Assad. Assad is fighting ISIS. He is fighting ISIS. Russia is fighting now ISIS. And Iran is fighting ISIS."

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We have to get rid of ISIS first. After we get rid of ISIS, we'll start thinking about it. But we can't be fighting [Bashar] Assad. And when you're fighting Assad, you are fighting Russia, you're fighting - you're fighting a lot of different groups.

— Donald Trump