Greek President Karolos Papoulias, center, Socialist leader Evangelos Venizelos, from left, Conservative leader Antonis Samaras and Leftist leader Alexis Tsipras meet at the presidential palace in ... more 
Greek President Karolos Papoulias, center, Socialist leader Evangelos Venizelos, from left, Conservative leader Antonis Samaras and Leftist leader Alexis Tsipras meet at the presidential palace in Athens, Sunday, May 13, 2012. Greek President Karolos Papoulias has called the leaders of Greece's political parties to meetings on Sunday, in a last-ditch effort to broker a deal for a coalition government. (AP Photo/Kostas Tsironis) less 
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Associated Press | Photo By Kostas Tsironis
Sun, May 13, 2012 1:49 PM EDT