Hardline Iranian President Mahmoud Ahmadinejad told a pro-Palestinian rally on Friday that revived Middle East peace talks are "doomed" to fail, as Islamist militiamen stopped one of his arch rivals from attending the annual march. Calling Western-backed Palestinian president Mahmud Abbas a hostage of Israel, Ahmadinejad said the talks that he began with Israeli Prime Minister Benjamin Netanyahu in Washington on Thursday lacked legitimacy as he had no right to make concessions in the name of the Palestinian people. "What do they want to negotiate about? Who are they representing? What are they going to talk about?" he asked rhetorically about Abbas's negotiating team. "Who gave them the right to sell a piece of Palestinian land? The people of Palestine and the people of the region will not allow them to sell even an inch of Palestinian soil to the enemy. The negotiations are stillborn and doomed."