Richard N. Haass: “The E.U. is an instrument on the trade issue. It is our largest trading partner and investor.”

America's credibility is not on the line. We are the greatest Nation in the history of the world.

This might get China's attention. I actually think China is key here.

He doesn't want Ukraine to be a thriving democracy that would set an example that some people in Russia might notice and say, why there, not here?

This is a civil war. Whether you think it was humanitarian intervention or not, this is a civil war.