What did Americans and other Western rulers miscalculate about post revolution era?

Iranians, other Muslims attend mourning processions in millions to mark Tasu'a

Millions of Muslims across Iran and other countries are taking part in nationwide processions on Tasu'a, which marks the ninth day of the lunar calendar month of Muharram and precedes Ashura, the day when Imam Hussein, the third Shia imam, was martyred.

The month of Muharram from Imam Khomeini's point of view

Imam Khomeini: The army, you, and we should do our best to protect and restore security in the ...

Sahifeh-ye-Imam, V. 7, P. 20

The world is praiseworthy so long as it paves the way for the advancement of man, Imam explained

According to Imam Khomeini, the world is commendable and praiseworthy so long as it paves the way for the advancement of man and leads to his perfection.

Leader’s speech on Imam’s passing anniversary, a lesson in piety, politics, history

Addressing the multitude of people at the impressive ceremony to mark the 34th anniversary of the passing of Imam Khomeini, the architect of the Islamic Revolution, Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei touched on many significant and pressing issues.

Imam Khomeini’s legacy transcends frontiers of time and space: Analyst

Lebanese cleric says Imam Khomeini fostered 'spirit of brotherhood' to help oppressed nations