My question is this........Obama put sanctions in place on Russia, seized their diplomatic compounds, and expelled some Russian officials.  Why is Trump wanting to ease the sanctions, and allow them back into their compounds?

Let's say for argument sake that Obama didn't do everything he could.  Fine.  However........

Collusion or no collusion.....that isn't the question here.  Obama did do something about it after the election.  Why doesn't Trump seem to care?  Why is he easing sanctions on Russia (both with regards to the election and Ukraine) without getting anything in return?