Today, Greece is at the edge and so is Papandreou, who is hanging onto his job by his fingertips. Should Greece and Papandreou tumble, Europe may feel the impact. Papandreou has to keep his party’s shrinking parliamentary majority in line to pass 78 billion euros ($110 billion) in austerity measures required for Greece to get a second bailout from the European Union. The EU reluctance to lend until the conditions are met has roiled markets …