Iran and world powers still appeared a long way off from a nuclear deal late Saturday with US Secretary of State John Kerry and officials on both sides warning of major gaps two days before a deadline. Kerry, who on Friday postponed a trip to Paris to remain in Vienna, met Iranian Foreign Minister Mohammad Javad Zarif on Saturday afternoon, their fourth meeting in three days. German Foreign Minister Frank-Walter Steinmeier, in the Austrian capital since Saturday midday, called this final weekend of talks, after months of negotiations, a "moment of truth". At stake is a historic deal in which Iran would curb its nuclear activities in exchange for broad relief from years of heavy international economic sanctions.
Vice President Joe Biden and Turkish President Recep Tayyip Erdogan emerged from a nearly four-hour meeting Saturday, offering no indication that the U.S. and Turkey had bridged their differences about how to deal with Islamic State fighters or Syrian President Bashar Assad.
Tensions were high on Saturday in the St. Louis suburb of Ferguson, with a US grand jury poised to decide whether to prosecute a white police officer for killing an unarmed black teenager. US President Barack Obama has called for calm, Missouri's governor declared a state of emergency and activated the state National Guard, and the FBI has deployed an extra 100 personnel to the area. Police helicopters trained search lights over Ferguson late Friday as a small gaggle of protesters braved the cold to demand that officer Darren Wilson stand trial for shooting 18-year-old Michael Brown dead on August 9.