Amir Taheri makes another point:

Americans will certainly have 9/11 in mind when they vote today. But they should keep another date in mind, too — one almost exactly a quarter-century ago: Nov. 4, 1979. A clear path runs to 9/11 from the day of the raid on the U.S. embassy in Tehran and the seizure of American hostages.

An interesting take from someone who saw most of the earlier incident's events from the inside.