Grandfather Issam kisses his grandson Rayan goodbye before the 4-year-old left to enter Iraq. Issam did not have papers to cross. "Separation has killed the people. It's destroyed a generation. War is without a purpose," Issam said, crying. Cecilia Uddén hide caption
Turkey-backed Free Syrian Army soldiers celebrate around a statue of Kawa, a mythology figure in Kurdish culture as they prepare to destroy it in city center of Afrin, northwestern Syria, early Sunday. Hasan Kirmizitas/AP hide caption
Caleb Stevens (fourth from left) in Raqqa, Syria, with other members of his unit. Stevens, a 23-year-old from Michigan, traveled to Syria to fight with the Kurdish People's Protection Units or YPG. Courtesy of Caleb Stevens hide caption
Turkish army tanks head to Afrin, an enclave in northern Syria controlled by U.S.-allied Kurdish fighters, on Monday. AP hide caption