Vanished. A year after Malaysian Airlines Flight 370 disappeared from radar screens en route to Beijing from Kuala Lumpur, search teams are still looking for the plane. No clues have emerged to clarify why the Boeing 777 kept flying for more than six hours after it slipped off the radar. At 19:30 GMT Thursday, The Stream asks aviation experts and relatives of the victims how long the search for answers should continue.

Nuclear negotiations with Iran are being closely watched by Saudi Arabia and the rest of the Gulf Cooperation Council (GCC). They're worried a deal with Iran would bolster Tehran's increasing influence in the Middle East. U.S. Secretary of State, John Kerry, flew to Riyadh last week to ease fears and assure that a diplomatic solution to Iran's atomic programme would make the region more secure. We discuss at 19:30GMT.