The Iranian government is being kept in power by force and will not last its four-year term, one of the opposition presidential candidates has predicted.
Opposition member Mehdi Karoubi said the government faced pressure from members of parliament, the Iranian public and the rest of the world.
Speaking to the BBC in Tehran, he repeated allegations over the abuse of anti-government protesters in prison.
President Mahmoud Ahmadinejad was re-elected in disputed elections in June.
"From the first day the election result came out I was convinced that Mr Ahmadinejad would not survive the full four years of his term," Mr Karoubi said.
"Even within the last six months, the government has only been kept in power by force."
