Bush began his presidency primarily as a domestic leader. He ends it as a war leader who has left a huge imprint internationally. His greatest legacy, the global war against Islamist terror, has left the world a safer place, and his decision to project global power and military might against America's enemies has made it harder for Islamist terrorists to strike against London, Paris or Berlin.
Bush's decision to remove Saddam Hussein from power will make it less likely that rogue regimes, Iran and North Korea included, will seek to militarily challenge American power. The memory of the invasion of Iraq and the unequivocal message that sent is by far the most effective deterrent to Tehran developing a nuclear weapon.
If superpowers do not demonstrate an ability and a willingness to wield power (as Britain did on numerous occasions at the height of the Empire) their hegemony will be increasingly challenged. President Bush exercised U.S. military power to stunning effect in both Iraq and Afghanistan, an important reminder that America was still a force to be reckoned with after the 1990s humiliation of Somalia and the half-hearted missile strikes against Bin Laden in Sudan. In an age of growing threats and challenges, the projection of hard power matters, and America's next president would be wise to take heed.
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