Greece's Prime Minister Alexis Tsipras speaks a plenary session of the Parliament in Athens

ATHENS, GREECE - APRIL 6 : Greece's Prime Minister Alexis Tsipras addresses during a plenary session of the Parliament in Athens, Greece, 06 April 2015. The Parliament Plenum will decide on the setting up of an investigation committee that would look into the events leading up to Greece's entry into bailout programmes and austerity memorandums. (Photo by Ayhan Mehmet/Anadolu Agency/Getty Images)