Former parliamentary speaker Mehdi Karoubi speaks with journalists while attending news conference in Tehran October 12, 2008. The leading Iranian reformist said on Sunday he would run in next year's presidential election, challenging conservative President Mahmoud Ahmadinejad who is widely expected to seek a second four-year term. The backdrop reads, "I wouldn't want to survive, should Iran not do so". REUTERS/Morteza Nikoubazl