What should the "free" world do if Gaddafi gains an upper hand in Libya, and does what Saddam did to some of his subjects after the 1990-1 gulf war?

Whoever has his foe at his mercy and does not kill him is his own enemy.

Shaikh Sa’di Shirazi

.
What do you do in a battle in which you die if you don’t fight or lose?
.
Should NATO or whoever make a move before he regains an advantage?

I don't care if I follow your rules, if you can cheat, so can I.
.
I won't let you beat me unfairly, I'll beat you unfairly first.
.
Ender Wiggin
Fictional Military Strategist