Sheikh Humaydi Daham al-Hadi (also Hamidi Daham al-Hadi and Hmeidi Daham al-Jarba) is the current leader in Syria of the Arab tribe of Shammar. In 2014, he was given a role described variously as co-president and co-governor of Jazira canton of Rojava in northern Syria.[1][2][3][4] He has actively promoted the campaign against ISIS, and has been a severe critic of Wahhabism.[1][5]