Who are the Houthis and why is Saudi Arabia fighting them?

Everything you need to know about the Shia rebel group and the war in Yemen source: http://www.independent.co.uk/news/world/middle-east/houthis-yemen-war-saudi-arabia-why-who-gulf-islam-conflict-a8627021.html #Headlines by:

Original Post: https://www.independent.co.uk/news/world/middle-east/houthis-yemen-war-saudi-arabia-why-who-gulf-islam-conflict-a8627021.html