ATHENS, GREECE - FEBRUARY 24:  Riot police line up outside a closed branch of the National Bank of Greece during a 24-hour general strike on February 24, 2010 in Athens, Greece. Greece ground to a halt and flights were grounded as unions staged a one-day general strike in protest against the Government's austerity measures designed to contain the massive public deficit.  (Photo by Milos Bicanski/Getty images)