Concerns over North Korean activity weeks after Hanoi summit

04:18

A UN team of international experts will report today that North Korea is cheating on sanctions designed to pressure the regime into denuclearizing, according to the Wall Street Journal. This comes despite claims from top administration officials that the sanctions are exerting "maximum pressure" on Kim Jong Un. Ambassador Wendy Sherman, former Undersecretary of State for Political Affairs, joins Andrea Mitchell to discuss.