Thrilled with the progress that's been made between the U.S. and Iran, which could well be President Obama's greatest foreign-policy achievement. The world is a better place now that Iran has begun the process of dismantling large sections of its nuclear program -- and many loved ones have been returned to their families. As I sat in Mr. Smith's home room class in seventh grade at Rhodes Junior High counting the days of the Iranian hostage crisis, diplomacy like this seemed unimaginable. The president is right that it's time for a new era between us. I'm sure the families of Washington Post journalist Jason Rezaian, former U.S. Marine Amir Hekmati, Christian pastor Saeed Abedini and Nosratollah Khosravi-Roodsari would agree.