And naturally we are reluctant to acknowledge that religious war has been declared on us, if for no other reason than religious wars are the worst and most intractable of wars.
And also, no longer believing ourselves, we can't credit that some, but not all muslims, are driven by their faith to mass murder and suicide and political domination. It is quite beyond our imagination.
But nonetheless we are at war and we are fighting a just war, and in a just war we have the right and duty to kill the enemy. And that is what we did in Abbottabad, we killed an enemy leader in a just war.