Greece, creditors dig in after debt talks founder

ATHENS/BERLIN (Reuters) - Greece and its creditors stuck to their positions on Monday after the collapse of talks aimed at preventing a default and possible euro exit, while Germany's EU commissioner said it was time to prepare for a "state of emergency". Prime Minister Alexis Tsipras ignored pleas from European leaders to act fast. Instead he blamed creditors for the collapse of the cash-for-reform talks on Sunday, the biggest setback in long-running negotiations to secure more a