30 years ago Bruce Laingen was one of the American hostages in former US Embassy in Tehran.  He says despite the terrible things done to him over those 444 days, he still favors diplomacy with Tehran.

The most senior diplomat at the embassy when it was seized by Islamist students in 1979, Laingen argued for years afterward for opening dialogue with Iran and he backs the talks that led to a breakthrough agreement over Tehran's nuclear program in the early hours of Sunday in Geneva.

But as hostility between the United States and Iran eases, Laingen and fellow ex-hostages want the Islamic Republic at least to acknowledge the trauma of their captivity.

"We haven't heard that expression of apology yet.