German Foreign Minister Frank-Walter Steinmeier, left, French Foreign Minister Laurent Fabius, 3rd left, Chinese Foreign Minister Wang Yi, 4th left, European Union High Representative for Foreign Affairs and Security Policy Federica Mogherini, centre row, right, U.S. Secretary of State John Kerry, 4th right, British Foreign Secretary Philip Hammond, 3rd right, and Russian Foreign Minister Sergey Lavrov, right, meet at an hotel in Vienna, Austria Monday, July 6, 2015. Iran's foreign minister Mohammad Javad Zarif said on Monday some differences still remained between Iran and six powers over the country's disputed nuclear programme ahead of Tuesday's deadline for a final agreement to end a 12-year-old dispute. (Carlos Barria/Pool Photo via AP)