NOW With Alex Wagner 03/26/15

Saudi-Led union launches airstrikes in Yemen

As Saudi Arabia and a coalition of Arab countries continues to launch a flurry of airstrikes against the Shi’ite militias, MSNBC’s Ayman Mohyeldin has an update on what you need to know and why Iran is calling this a “US-backed aggression.” ... more Duration: {{video.duration.momentjs}}