Yemen war escalates: Who are the key actors involved?

• EXPLAINERHere is a look at the main actors currently involved in the conflict.
• Yemen’s more than a decade-long civil war has flared up once again after the Houthi rebel group launched an offensive in several locations against Saudi Arabian-backed government forces.
• The conflict has already spilled over beyond the country’s borders with the Houthis launching an attack on southern Saudi Arabia, targeting oil facilities and wounding dozens of people this week.