CHICAGO, Nov 7 (Reuters) - An international effort must be made to keep Iran from developing a nuclear weapon, U.S. President-elect Barack Obama said on Friday. "Iran's development of a nuclear weapon, I believe is unacceptable," he said at a news conference in Chicago. "Iran's support of terrorist organizations, I think is something that has to cease," he said. Obama said he would be reviewing a letter from Iran's President Mahmoud Ahmadinejad, congratulating him on his election, and would "respond appropriately." But he said the U.S. approach to Iran could not be done in a "knee-jerk" fashion. "I think we've got to think it through," he said.
Iranian women shout their support for Maryam Rajavi, head of the National Council of Resistance of Iran, as she arrives at the Italian parliament in Rome, October 23, 2008. A European ...