Putin have publicly said U.S. sanctions imposed after Crimea is of no use. In fact they have been quite helpful to Russia. As to sanctions imposed by Obama for allegedly interfering with U.S. election Putin have not yet respond. The Trump people have asked Putin to hold off on reciprocating response. If Putin see continued turmoil on Trump he will walk from normalization, cooperation and impose sanctions on the U.S. 

If Putin walks that's the end of Trump claim he can establish better relationship with Russia for the purpose of fighting Daesh. Ain't going to happen. Russia will run the show both in Syria and eastern Ukraine regardless of U.S./NATO.