[Michalis Giannakos, president of the National Panhellenic Federation of Public Hospital Employees, tries to cross a police formation during a protest against government's policies on health issues in Athens, Wednesday, January 25, 2017. Greece's left-wing government says it is willing to extend an automatic austerity mechanism for one additional year in an effort to break the deadlock on current bailout negotiations. (AP Photo/Yorgos Karahalis)]ATHENS, Greece (AP) — Greece's prime minister has marked two years in office, promising "not another euro" of new austerity measures by his left-wing government as talks with bailout lenders remain at an impasse over demands for deeper cuts.