The full sweep of the new Bush Doctrine was on display this past week, as President Bush traveled through North Asia delivering a consistent and powerful message: American security and global security require a determined assault not just on terrorists but on the three-headed hydra of tyranny, terror, and weapons of mass destruction. The imperative of regime change was the core message of Bush's State of the Union address. This week Bush made plain that the implications of his doctrine go beyond North Korea, Iran, and Iraq, the "axis of evil." Just as the Reagan Doctrine-- primarily aimed at overthrowing Communist regimes--ended up toppling right-wing dictatorships in the Philippines and South Korea, so, too, the Bush Doctrine could help undo dictatorships not only in Iraq, Iran, and North Korea, but also in, for example, China and Saudi Arabia.