Andrea Mitchell Reports 12/14/17

UN Amb. making case to withdraw from Iran nuclear deal,...

UN Ambassador Nicki Haley said the Trump administration believes Iran provides missiles to terrorist organizations. MSNBC's Andrea Mitchell and NBC Security Analyst Jeremy Bash explain why Haley's speech could signal a shift in the US's approach to Iran, and what it means for the nuclear deal. ... more Duration: {{video.duration.momentjs}}