5 things to know for March 3: War with Iran, Nationwide protests, Primaries, Clinton depositions, Nancy Guthrie

By Alexandra Banner, CNN Large swaths of Middle Eastern airspace have been shut down as the conflict in Iran escalates. See how the disruptions along major flight routes have carved a “hole in the sky,” forcing airlines to reroute planes onto longer, costlier paths. Here’s what else you need to know to get up to