Shop owners play backgammon in the Plaka area of central Athens, on Tuesday, Nov. 1, 2011. Markets plunged Tuesday and Greece's beleaguered Socialist government faced collapse, a day after Prime Minister George Papandreou unexpectedly announced plans to hold a referendum on the latest international debt relief and bailout deal for his country. (AP Photo/Petros Giannakouris) ORG XMIT: ATH106
