Some voices are calling on America to circle the wagons. Some are even saying that our enemies do worse, so we should respond in kind. The problem he… - Michael Ignatieff

As Interim Leader of the Liberal Party of Canada.

The Only cure for nihilism is for liberal democratic societies - their electorates, their judiciary, and their political leadership- to insist that force is legitimate only to the degree that it serves defensible political goals. Thus implies a constant exercise of due diligence...

The dilemmas here are best illustrated by looking closely at pre-emptive war. It is a lesser evil because, according to our traditional understanding of war, the only justified resort to war is a response to actual aggression. But those standards are outdated. They were conceived for wars against states and their armies, not for wars against terrorists and suicide bombers. Against this kind of enemy, everyone can see that instead of waiting for terrorists to hit us, it makes sense to get our retaliation in first.