The Iranian government intends to use the nuclear program for peaceful purposes, but must convince international public opinion of that.
Yes - it's the same in any other work - the more you massage your thinking the more capable I believe you are of expanding how you go about things and learning.
I would not trade America's position in the world - our ledger, our debts and assets - for any country in the world. There isn't a country in the world even close to America.