With the countdown clock winding down in the latest round of talks over Iran’s nuclear program, the top U.S. and Iranian diplomats began another meeting in Vienna Sunday evening, possibly pushing the announcement of a final deal to Monday.
A senior U.S. State Department official warned that "major issues" remain to be resolved in the talks, and Iranian foreign affairs official Alireza Miryousefi called a Sunday announcement of the 100-page accord “simply logistically impossible”.
The Associated Press first reported that the announcement would be made Monday.
Among other disagreements, the sides are split over a U.N. arms embargo on Iran, which Western powers want to keep in place.
EU Foreign Minister Federica Mogherini, who is also part of the talks, said Sunday morning negotiators were in the "decisive hours."
The foreign ministers of Britain, France and Germany were also in Vienna. It remains unclear when China’s Foreign Minister, Wang Yi, will rejoin negotiations in person.