It is unrealistic to expect Greece to repay its huge debt in full, the chief economics spokesman for the victorious Syriza party has told the BBC.

"Nobody believes that the Greek debt is sustainable," Euclid Tsakalotos said.

The far-left Syriza, which won Sunday's general election, wants to renegotiate Greece's €240bn (£179bn; $270bn) bailout by international lenders.

EU leaders have warned the new Greek government that it must live up to its commitments to the creditors.

Syriza leader Alexis Tsipras - who was sworn in as prime minister on Monday - is expected to unveil his new cabinet later on Tuesday.

'Dangerous Europe'

"I haven't met an economist in their heart of hearts that will tell you that Greece will pay back all of that debt. It can't be done," Mr Tsakalotos said.

It is unrealistic to expect Greece to repay its huge debt in full, the chief economics spokesman for the victorious Syriza party has told the BBC.

"Nobody believes that the Greek debt is sustainable," Euclid Tsakalotos said.

The far-left Syriza, which won Sunday's general election, wants to renegotiate Greece's €240bn (£179bn; $270bn) bailout by international lenders.

EU leaders have warned the new Greek government that it must live up to its commitments to the creditors.

Syriza leader Alexis Tsipras - who was sworn in as prime minister on Monday - is expected to unveil his new cabinet later on Tuesday.