ALEPPO, SYRIA - APRIL 5: Syrian opponents use artillery with a handmade weapon called 'hell' to attack al-Sheikh Maqsoud neighborhood under control of PYD in the city of Aleppo, Syria, on April 5, 2016. PYD  the Syrian affiliate of the PKK organization  as a terrorist group. (Photo by Abdullah Ghannam/Anadolu Agency/Getty Images)