While hundreds of leaders from around the world are in New York this week at the United Nations, Greece’s prime minister, George Panpandreou will be conspicuously absent. Panpandreou cancelled his planned trip to the U.S. this week to stay at home and deal with his country’s rapidly deteriorating debt crisis. This morning, European stock markets fell sharply as tensions mount over Greece’s inability to solve its problems. Yanis Varoufakis, professor of economic theory at the University of Athens, has the latest on the story.