From the editors at the National Review:
U.N. secretary general Kofi Annan should either resign, if he is honorable, or be removed, if he is not. The mild-mannered Annan may not himself be corrupt. But he has presided over no less than the largest corruption scandal in the history of the world, Oil for Food. Never has the U.N. been more disrespectable or useless. Moreover, Annan's response to the scandal has been inadequate to the point of disgrace. That he still holds his post is testament to the culture of impunity that pervades the organization.
As they say, read the whole thing.