Intent on easing crippling economic sanctions and using new moderate president to open up backchannels.
Israel is widely believed to possess dozens of atomic weapons.
Hasan Rouhani's U.N. speech showed a more moderate face of the hard-line regime in Tehran.
President Barack Obama reached out to Iran's new president as a possible force for positive change.
Challenges posed by sanctions shape President Hasan Rouhani's agenda at the U.N. General Assembly.
Soon we will be able to name the winners and the losers from the Arab Spring of 2011. Politics,World,Bahrain,Egypt,Iran,Iraq,Israel,Saudi Arabia,Tunisia,United States,Yemen,David A. Andelman
Top Democrats and Republicans said the U.S. president should not waver on sanctions, despite signs of thaw.
Mass release is likely to provide a diplomatic boost for Hasan Rouhani.
Meeting between leaders could help ease nuclear impasse.
French, Algerian ex-foreign ministers say killings a crime against humanity.
