Greek PM Tsipras in Brussels as clock ticks on EU bailout

By Alastair Macdonald and Foo Yun Chee BRUSSELS (Reuters) - Greece's radical new prime minister Alexis Tsipras was in Brussels on Thursday to lay out his case for more financial help to fellow EU leaders following finance ministers' failure to narrow differences overnight. The summit chairman, conservative former Polish premier Donald Tusk, confessed to anxiety about Greece after the newly elected left-wing government, riding a wave of anti-austerity sentiment, refused to sign up to an