What the president did note with some pride, however, is that beyond preventing a second attack, he is bequeathing to his successor the kinds of powers and institutions the next president will need to prevent further attack and successfully prosecute the long war. And indeed, he does leave behind a Department of Homeland Security, reorganized intelligence services with newly developed capacities to share information, and a revised FISA regime that grants broader and modernized wiretapping authority.

In this respect, Bush is much like Truman, who developed the sinews of war for a new era (the Department of Defense, the CIA, the NSA), expanded the powers of the presidency, established a new doctrine for active intervention abroad, and ultimately engaged in a war (Korea) — also absent an attack on the U.S. — that proved highly unpopular.

So unpopular that Truman left office disparaged and highly out of favor. History has revised that verdict. I have little doubt that Bush will be the subject of a similar reconsideration.