The Persian Empire was a world power in ancient times, until Alexander.
Then Islam arrived in the 7th century leveling the spirit of the nation.
Following WW1, the Phalavi Dynasty re-formed its politics, marginalizing
the Clergy and Sharia Law; reforms that were carried on by his son
Shah Reza, until his overthrow during the Carter years.
Given its history, Iran is capable of re-capturing its heritage w/o war
w/the USA or anyone else.