While the situation in Crimea is unfortunate and likely will lead to a short (and decisive) war between Ukraine and Russia, we Americans just don't care.
It is sad. But more Americans are concerned about how weak we appear to be rather than how many Ukrainians die or become refugees.
And we want our nation to look mean and threatening, but we are unwilling to back up our bluster with actual troops and weapons. Good. We don't need to lose American lives just to prove that our president has a set of balls inside his mom-jeans.
Crimea is far away. We don't understand their history. Hell, we don't even understand their language. Let them sort it out.