Iran's President Mahmoud Ahmadinejad in New York

Iranian President Mahmoud Ahmadinejad is in New York for the opening of the UN General Assembly, saying this weekend's release of Sarah Shourd should be met by what he called a comparable "humanitarian gesture" by the US. Shourd is one of three Americans arrested last year and charged with spying near the Iraq-Iran border. The US is holding several Iranians on various charges. Reza Aslan is a columnist for the Daily Beast and author of No god But God: The Origins, Evolution and Future of Islam.