I'm buying my marshmallows
Ukraine is not an ally of the U.S. in anything near the same way that some of the Pacific Rim nations are. I can't see how Beijing would take any lessons away from us letting a Russian sphere nation be bullied by Russia. I disagree there is a significant security risk to the U.S. This is Europe's deal, and they ought to handle it.
You can never be safe from a government that can keep you completely safe from each other and the world. You must choose.
Russia isn't Iraq or even Vietnam. It isn't even Japan or Germany. It would by far be the most brutal and difficult war in the history of this nation.
Ukraine is engaging in a healthy form of rebellion that is currently spreading anywhere that unjust government rules. I support their people's right to freedom and self-determination.
The US and UK helped put the recently ousted Ukraine president in office. I've read that Putin was supportive of the Ukraine president and government. The news says the protestors in Ukraine are national fascists aka neo nazi's. The US and Russia still have a common enemy in these hooligan hitler wannabes, no?
Unrest and uprising in Ukraine could directly effect and spill over into a Russia. So why wouldn't Russia be pro-active instead of re-active and make it's presence known?
It would be tragic, and hopefully some good diplomacy can avoid such a fate.