These quibbles aside, the Tehran Times was confident that the election result would testify to the "political vigilance and maturity of the Iranian people".

BBC: Iranian press hails expected high turnout

The letter is said to mention a model of centrifuge, called IR2m, which can enrich two or three times faster than the present equipment being used by Tehran, according to the Associated Press.

BBC: Natanz uranium enrichment plant

The letter is said to mention a model of centrifuge, called IR2m, which can enrich two or three times faster than the present equipment being used by Tehran, according to the Associated Press news agency.

BBC: Natanz uranium enrichment plant

According to the Ashgabat arrangement, Turkey agreed to buy more than 28 billion cubic metres of Turkmen gas a year, almost three times the quantity that it had signed up for in Tehran.

ECONOMIST: Turkey and Iran

The Russians have been misled and manipulated by the Iranians plenty of times, fraying patience in Moscow over its on-again, off-again relationship with Tehran.

ECONOMIST: Russia and America