She is partly correct, but mostly incorrect. Russia invaded Georgia on GWB's watch, and GWB wasn't able to undo that; however, Obama should have learned from that and proactively planned to prevent another such Russian invasion. He had 5 years to prepare for that and did nothing, even though he knew full well that it would happen again - not just could happen, but would happen - and so it is Obama, not GWB, that is largely to blame for Ukraine.