Leader's 'Disappearance' Comes at a Tricky Time for U.S.-Nigerian Relations

Forget Austin Powers. The real "international man of mystery" is President Umaru Yar'Adua of Nigeria, who has not been seen in public since Nov. 23. Yar'Adua's disappearance has touched off a firestorm of controversy in Nigeria, Africa's most populous nation. Experts say government in the major oil-producing nation has basically ground to a halt.