Preemption doctrine openly rejected waiting for threats to fully materialize.

Evidence

Bush reiterated this preemption doctrine in a West Point commencement speech six months later: “If we wait for threats to fully materialize we will have waited too long… . ​We must take the battle to the enemy, disrupt his plans and confront the worst threats before they emerge.” — Sahar F. Aziz, The Racial Muslim, 721