What was the relationship between the US and Iran before?

A tough high-stakes call this week for Barack Obama at the UN. Should he take a bold gamble and try and meet with the new president of a state that is pretty much against everything the US stands for Iran.(9)After decades of animosity, America, the great Satan to Iran, and Iran, part of the US’s old axis of evil, that may be a thaw afoot. As if to set that new tone, a very public invitation to meet came from Iran’s president on twitter. While no meeting has been set, the White House is clear it may be time to talk, if Iran is serious about giving up the desire of the US says it has to make a nuclear bomb.(10)Since he took office, Obama said, he would welcome diplomacy with Iran. We will extend the hand, if you’re willing to unclench your fist.