As is often noted, we all have a tendency to fight the previous war. Just as the 'quagmire' of Vietnam led to reluctance to intervene in Bosnia (at the cost of hundreds of thousands of lives), so too the successes of Kosovo led to the peremptory and ill planned interventionism of Iraq. But Libya is not Iraq. As jubilant crowds fill Green Square, the fall of Tripoli to the rebels is a victory on many counts