Negotiations in Brussels between Athens and its creditors break down again as optimism over new Syriza proposals evaporateGruelling negotiations between Greece and its creditors broke up without agreement on Wednesday evening as lenders warned the country that it must accept more austerity if it is to avoid defaulting on its debts.A third meeting of eurozone finance ministers in less than a week was called to a halt amid fresh deadlock over an agreement on greater spending cuts in Athens in exchange for rescue funds.