PBS NewsHour | Clip | Why NATO allies disagree on taking action against Russia
President Joe Biden on Thursday cleaned up comments he made a day earlier, to say any Russian incursion into Ukraine would lead to a severe and unified response by the United States and its allies. In Berlin, Secretary of State Antony Blinken also presented unity. But as Biden himself admitted Wednesday, the transatlantic alliance is not unified over how to punish Russia. Nick Schifrin explains.