And, what does every other country in the world do? how many countries use hard currency any more? every country in the world prints money, and they all buy and sell in their own currencies, or what ever currency they may decide to do so in, so what is your point?
Our currency is recognized internationally, and we pay interest on moneys invested in our country, we don't steal from those investors by nationalizing the investments that are made those investors, they make money, we make money, we honor the contract.
That is not what Mossadegh did, he took the investments of others, he broke contracts, and he failed to return the original investments let alone the interest and dividend earned by those investments, he made them His own, and for all the grand sounding words he did what you accuse the U.S. of doing he stole from the people who invested in his country and were paying royalties on every ounce of oil that left that country, but Mossadegh wasn't satisfied with the Contracts as they were set up, by Grown Men doing Business, he wanted the whole pie, so he engineered a grand theft of others investments, he stole the original investments, and then he stole the dividends and interest owed on those moneys, from people who were investing in the country of Iran, No matter how you dress it up a Thief, and theft of property, and money, and a man of no honor who failed to live up to the word of his country, and the contracts signed by his country.
Hmm I see you are naive and unversed in international economics.
here is some reading material:
http://www.globalissues.org/TradeRelated/SAP.asp