Iran, prompting Tehran to stop complying with the deal by accelerating its enrichment of uranium and rebuilding stockpiles.

The President has said he wants to negotiate a new deal with Tehran, but Iran has refused to enter fresh talks, urging the US to return to the terms of the original deal.

While European countries have tried to establish economic measures to skirt the American sanctions, these have been largely ineffective.

On September 14 Saudi Arabia's largest oil refinery at Abqaiq was hit by explosive-laden drones that Riyadh said came from Iranthe official said. "This is a nightmare," said a senior U.S. military official. "We had guys who saw the aftermath, and it was very bad. This is going to hurt us badly. It may be worse than Abu Ghraib, and it comes at a time when we're trying to have an impact for the long term." The official was referring to the prison scandal that emerged in 2004 in which U.S. soldiers tortured and abused Iraqis. In last week's incident, Blackwater guards shot into a crush of cars, killing at least 11 Iraqis and wounding 12. Blackwater officials insist their guards were ambushed, but witnesses have described the shooting as unprovoked. Iraq's Interior Ministry has concluded that Blackwater was at fault. The Washington Post

Blackwater, one of the largest