Saudi Arabia carried out strikes on Yemen’s port city of Mukalla Tuesday after accusing the United Arab Emirates of sending a shipment of weapons and combat vehicles to separatist forces known as the Southern Transitional Council. Shortly after the strikes, the UAE announced that it’s withdrawing its remaining troops in Yemen. The Southern Transitional Council initially supported Yemen’s internationally recognized government against the Houthi rebels, but earlier this month the separatist forces launched an offensive against the Saudi Arabia-backed government troops.