Iran and six world powers made little progress in overcoming significant disagreements in the most recent round of nuclear talks, including on uranium enrichment, Iranian and Western diplomats close to the negotiations said on Friday.
Six world power have never been so close to a deal with Iran that would resolve the decade-long nuclear standoff once and for all, but the final phase of the negotiations will be the hardest, Germany's foreign minister said on Thursday.
For decades the opposing poles of Middle East power politics, Saudi Arabia and Iran may be driven to set aside at least some of their differences by the rise of a mutual enemy: Islamic State.