President Trump is a Jacksonian. Neither a Neo- Con nor a Neo- Isloationist. So was Reagan.
Weak minded people think every time president Trump makes a decision they don’t agree with, he was “seduced” by some evil cabal.
It’s perfectly easy to see President Trump’s motives. He pressured Ukraine to cooperate, and he was welcoming to Russia. Ukraine came along and then Russia did not.
It’s only logical the president’s pressure campaign would shift to Russia.