There are some who would have us believe that, with Osama's having been de-commissioned, the war on terror is over. Generally, these are the same people who thought it never existed to start with, or if it did, that we should "fight" it by means "true to who we are." This was code for "fight it by trashing John Yoo, menacing CIA interrogators and hoping for the best."
Most observers, even on the Left, know full well the war is not over. Charles Krauthammer explains why today. As he notes,
The bin Laden operation is the perfect vindication of the war on terror. It was made possible precisely by the vast, warlike infrastructure that the Bush administration created post-9/11, a fierce regime of capture and interrogation, of dropped bombs and commando strikes. That regime, of course, followed the more conventional war that brought down the Taliban, scattered and decimated al-Qaeda and made bin Laden a fugitive.
Without all of this, the bin Laden operation could never have happened. Whence came the intelligence that led to Abbottabad? Many places, including from secret prisons in Romania and Poland; from terrorists seized and kidnapped, then subjected to interrogations, sometimes "harsh" or "enhanced"; from Gitmo detainees; from a huge bureaucratic apparatus of surveillance and eavesdropping. In other words, from a Global War on Terror infrastructure that critics, including Barack Obama himself, deplored as a tragic detour from American rectitude.