FILE - In this March 29, 2011, file photo, a Libyan rebel urges people to leave as shelling from Gadhafi's forces started landing on the frontline outside of Bin Jawaad, 150 kilometers (93 miles) east of Sirte, central Libya. Ten years ago, an uprising in Tunisia opened the way for a wave of popular revolts against authoritarian rulers across the Middle East known as the Arab Spring. For a brief window as leaders fell, it seemed the move toward greater democracy was irreversible. Instead, the region saw its most destructive decade of the modern era. Syria, Yemen, Libya and Iraq have been torn apart by wars, displacement and humanitarian crisis. (AP Photo/Anja Niedringhaus, File)