A Yemeni fighter backed by the Saudi-led coalition fires his weapon during clashes with Houthi rebels on the Kassara frontline near Marib, Yemen, Sunday, June 20, 2021. In January 2022, Yemen’s rebels have launched attacks with missiles and drones on the United Arab Emirates, a major escalation for one of the world’s most protracted conflicts. (AP Photo/Nariman El-Mofty, File)