Compiled 20:45 GMT
By PETER BAKER and MARK LANDLER
President Obama, speaking in the White House briefing room, said that he and President Hassan Rouhani of Iran had discussed the country's nuclear program, and Mr. Obama said he was persuaded there was a basis for an agreement.
By JUSTIN GILLIS
Top climate scientists on Friday embraced an upper limit on greenhouse gases while warning that it is likely to be exceeded within decades if efforts to curb emissions are not rapidly accelerated.
By RICK GLADSTONE
The Russian foreign minister said the diplomatic breakthrough was possible because the West had realized that military force was not an option.
By SOMINI SENGUPTA
Amid his fervent diplomatic theater this week, it was at times hard to tell whether Iran's president, Hassan Rouhani, was a genuinely transformative leader.
By THOMAS ERDBRINK
In Iran's news media landscape, which is divided into two camps, the hard-liners and reformists, the semiofficial Fars agency has emerged in recent years as the most influential conservative voice.
By NICK CUMMING-BRUCE
The Human Rights Council on Friday stepped up pressure on President Bashar al-Assad to allow greater access for humanitarian aid and for war crimes investigators.