Charging the Libyan leader with war crimes could make him more determined to fight on, but there are plenty of loopholes through which to evade justice if he chose to step down(http://feeds.feedburner.com/~r/time/world/~4/Gmggj6hMp9U)
Diplomacy far better than confrontation. Negotiation is a better choice than effrontery. Warrant arrest or no warrant arrest, the traces of war will remain forever. More pains should not be caused to Libyans with the actions of the world leaders on Libyan leadership. If the Libyans appreciate them today, they will certainly condemn them tomorrow. Believe! What do you think?