Who Are The Huthi Rebels And What Are Their Links To Iran?

U.S. and British forces have hit Iran-backed Huthi rebel military targets in Yemen, sparking fears of a growing conflict in the Middle East as fighting rages in the Gaza Strip. But who are the Huthi rebels, why did U.S. and U.K. forces strike now, and what are the rebels' links to Iran? Hannah Porter is a Yemen expert and senior research fellow with the Ark social enterprise group.