Greek debt crisis: Tsipras resists key bailout measures after 15 hours of talks

Talks stall on two points: IMF involvement in a new three-year bailout and a German demand for Greece to give up a50bn in public assets as collateral

A marathon overnight negotiation between Greece and its creditors remained unresolved on Monday morning after European leaders confronted Alexis Tsipras, the Greek prime minister, with a package of austerity measures which entailed a surrender of fiscal sovereignty.

A weekend of high tension that threatened to break Europe in two climaxed on Sunday at a summit of eurozone leaders in Brussels where the German chancellor, Angela Merkel, and the French president, Franiois Hollande, presented Tsipras with an ultimatum.

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