Iran and the P5+1 powers accepted that they would miss the June 30 deadline for a nuclear deal. Photo: State Department.

Iran and six world powers ramped up negotiations on Tuesday after accepting they would miss a June 30 deadline for a nuclear deal, with both sides cautioning that major obstacles to a lasting agreement remained.

Diplomats said the Vienna talks would run on for as long as necessary to reach a deal intended to promise an end to sanctions in exchange for at least a decade of limits on Iran’s most sensitive nuclear activities.

Read full story at Reuters.