Barack Obama is hell-bent on engaging the Iranian regime just to prove that he's not George Bush. That doesn't help the problem. That's not what people expected in Iran... The people of Iran are asking for help, and Obama cares about showing Khamenei that he can reason with him. That was Jimmy Carter's mentality in 1979 and that's still the mentality in 2012.
As quoted in Cnaan Liphshiz. Obama 'chickened out' of confronting mullahs. The Jerusalem Post. July 6, 2012.