With a deadline hours away, Iran and six world powers ramped up the pace on Tuesday in negotiations over a preliminary deal on Tehran's nuclear program, while officials cautioned that any agreement would likely be fragile and incomplete.
The foreign ministers of Iran and six world powers met on Monday in a final push for a preliminary nuclear accord less than two days before their deadline as Tehran showed signs of backing away from previous compromise offers.
Arab leaders at a summit in Egypt announced the formation of a unified military force to counter growing security threats from Yemen to Libya, and as regional heavyweights Saudi Arabia and Iran engage in sectarian proxy wars.
Saudi Arabia's navy evacuated dozens of diplomats from Yemen on Saturday and the United Nations pulled out international staff after a third night of Saudi-led air strikes trying to stem advances by Iranian-allied Houthi fighters.
