Stop thinking about appearances of weakness, that is not a path to emulate, it is the path of tyrants and despots.
Seems like, from your comment history, that you've been suckered into a Political Discussion on HN :-)
As they say: "the only winning move is not to play the game"
Er, no, its the Ukraine's move now.
> If he does nothing now, will he also do nothing when North Korea rolls into the South?
Does the US have a mutual defense treaty with and prepositioned large military forces in the Ukraine? How about South Korea? Seems to me, the two situations aren't comparable.
The plan for anti-ballistic launchers in eastern europe are to protect the USA against long range launches, not to protect eastern europe from ground troops.
But, again it's too late now. We'd need to have McCain to fix that. None of that (shield in Eastern Europe, Syria) would ever happen with McCain or Bush leading the country.
How are you so certain? =\