Barack Obama has promised a fresh approach in the United States’ relationship with Iran and the Middle East peace process.In a wide ranging interview on US television, the president-elect said he would seek to adopt a much broader stance in dealing with the Islamic state. “I think that Iran is going to be one of our biggest challenges. And as I said during the campaign we have a situation in which not only is Iran exporting terrorism through Hamas, through Hezbollah, but they are pursuing a nuclear weapon that could trigger a nuclear arms race in the region. We are going to have to take a new approach,” Obama said. Obama also repeated his promise to close the Guantanamo Bay prison camp, but suggested it might not happen within his first 100 days in office.