In this Sunday, July 26, 2015 photo, Syrian refugee infant Mohammed Ali, 43 days, sleeps inside a mosquito net at his family’s tent at an informal tented settlement near the Syrian border on the outskirts of Mafraq, Jordan. Of the 4 million refugees who fled Syria’s grinding civil war, it is the conflict’s youngest exiles who often bear the brunt of its woes. (AP Photo/Muhammed Muheisen)