As we struggle to make sense of the current political crisis in Pakistan, it's useful to think back nearly 30 years to the wave of protests that toppled the shah of Iran and culminated in the Islamic Republic -- a revolutionary earthquake whose tremors are still shaking the Middle East.

The shah was America's friend, just like Pakistani President Pervez Musharraf. He was our staunch ally against the bogeyman of that time, the Soviet Union, just as Musharraf has been America's partner in fighting al-Qaeda. The shah ignored America's admonitions to clean up his undemocratic regime, just as Musharraf has. And as the shah's troubles deepened, the United States hoped that moderate opposition leaders would keep the country safe from Muslim zealots, just as we are now hoping in Pakistan.