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

There is newfound optimism about the Trump administration reaching an agreement with Iran. But getting here was likely the easier part; what comes next will be even harder.

By Parisa Hafezi, Phil Stewart and Steve HollandDUBAI/WASHINGTON, June 12 (Reuters) - The United States and Iran signaled on Friday that an agreement to endtheir warwas close,…

Key issues, like Iran’s nuclear program, remain unresolved.