Former Secretary of State Madeleine Albright slammed Bernie Sanders on Saturday, expressing concerns over the Democratic presidential contender's "lack of knowledge" about foreign policy.
"I've been very concerned about his lack of knowledge," Albright said, citing his answer to a question about which country poses the biggest threat to the U.S. right now.
"We have to have a president that is ready on Day 1 to deal with problems," she told NBC News in an exclusive interview. "I have never seen such a complicated international situation, and we can't afford learning on the job."