The Pentagon would consider a military response in the case of a cyber attack against the United States, a US defense official said on Wednesday. Asked about the possibility of using military force after a cyber assault, James Miller, undersecretary of defense for policy, said: "Yes, we need to think about the potential for responses that are not limited to the cyber domain." But he said it remained unclear what constituted an act of war in cyberspace. "Those are legal questions that we are attempting to address," Miller said at a conference in Washington, adding that "there are certainly a...