That ranks as one of the most arrogant statements ever made. Only Jesus Christ can rid the world of evil, it exists in every human heart.
Arrogant? I didn't think so. Be careful that your own interpretation of Christianity isn't biasing you in any way. Perhaps it is arrogant to think your interpretation of Christianity alone is right and President Bush's is wrong, or "arrogant" as you say.
While it is true that only God can rid the world of evil, perhaps President Bush rightly sees humanity as the humble tools of God in this holy endeavor. There can be no denying that the uplifting of mankind has taken place in the past 2,000 years, and mostly in areas of the world which honor God, as the whole prosperity of the Western world happened in the wake of the Westerly flow of Christianity.