President Obama said Friday that Iranian President Mahmoud Ahmadinejad acted in a "hateful" way on Thursday when he accused the United States of being responsible for the Sept. 11 attacks, prompting the American delegation to walk out. "It was offensive," Obama told BBC Persian. "It was hateful. And particularly for him to make the statement here in Manhattan, just a little north of ground zero, where families lost their loved ones, people of all faiths, all ethnicities who see this as the seminal tragedy of this generation -- for him to make a statement like that was inexcusable." Ahmadinejad claimed...