So how do you propose to do this?
1) Acknowledge the lessons of history, and take Putin seriously.
2) Announce that as long as Russian forces occupy or threaten their neighbors, the Cold War is back on, Round Two, and our objectives now are the same as before: to surround, isolate and contain Russian expansionism.
3) Economic sanctions against Russia and energy independence for the West, including exports of natural gas to Europe.
4) Strengthen military ties with existing NATO countries, especially Poland, Czech Republic, Romania, Latvia, Lithuania & Estonia.
5) Expand NATO contacts with friendly republics like Ukraine and Georgia.
6) Constant negotiations with Russia over what actions it must take to reduce rising tensions, and end Cold War II.