A displaced Syrian man waits inside a truck carrying his family's belongings at a checkpoint near the town of Manbij on March 6, 2017. Tens of thousands of civilians have fled parts of eastern Aleppo province as government forces pound territory held by IS. The civilians are headed towards the town of Manbij, and surrounding areas, seeking safety in territory held by a Kurdish-Arab alliance called the Syrian Democratic Forces (SDF). / AFP PHOTO / DELIL SOULEIMAN