Greece's Tsipras, Russia's Putin to hold phone talks at 1000 GMT - official
The talks come hours before Tsipras addresses parliament on the state of negotiations with lenders for aid amid a fierce backlash from his party over a proposal offered by the euro zone and the International Monetary Fund.
Russia has been speculated as a potential source of funding for Greece if it fails to reach a deal with EU and IMF lenders. Athens has denied plans to turn to Moscow for help.
(Reporting by Renee Maltezou; Writing by Karolina Tagaris, editing by Deepa Babington)