“Negotiations on the outstanding issues, especially on Iran’s nuclear program, will be long and difficult,” one expert said.

The prospect of a breakthrough agreement between the United States and Iran appears closer than at any point since the conflict erupted earlier this year. Yet as officials on both…

By Phil Stewart, Eman Abouhassira and Saad SayeedWASHINGTON/DUBAI, June 13 (Reuters) - U.S. and Pakistani leaders forecast a Sunday signing of a long-elusive framework agreement…