Kelsey Davenport

World powers talked deep into the night Saturday seeking to break a deadlock in marathon negotiations with Iran and strike a historic deal to rein in Tehran's nuclear ambitions.

The gruelling diplomatic marathon towards an historic deal putting an Iranian nuclear bomb out of reach entered the final furlong today with one week left for Iran and six major powers to finalise the accord

Iran nuclear talks enter the decisive, dangerous endgame Thursday with a marathon final round of hardball negotiations potentially going all the way to the July 20 finish line.

World powers talked deep into the night Saturday seeking to break a deadlock in marathon negotiations with Iran and strike a historic deal to rein in Tehran's nuclear ambitions.

The gruelling diplomatic marathon towards an historic deal putting an Iranian nuclear bomb out of reach entered the final furlong today with one week left for Iran and six major powers to finalise the accord

Iran nuclear talks enter the decisive, dangerous endgame Thursday with a marathon final round of hardball negotiations potentially going all the way to the July 20 finish line.