On 12 April , the agreement to exchange the inhabitants of the rebel-held towns of Zabadani and Madaya with the inhabitants of the pro-Ba ' athist government towns of Al-Fu ' ah and Kafraya began to be implemented . On 15 April , a convoy of buses carrying evacuees from Al-Fu ' ah and Kafriya was attacked by a suicide bomber in Aleppo , killing more than 126 people
attacked by a suicide bomber
2017 Aleppo suicide car bombing
Timeline of the Syrian Civil War