A child looks out from a window of a bus upon arriving by a ferry from the Greek island of Lesbos at the Athens’ port of Piraeus on Thursday, Oct. 15, 2015. The international Organization for Migration said than more than 593,000 people have crossed into Europe this year of which 453,000 traveled from Turkey to Greece, which has faced a massive influx of people from Syria.(AP Photo/Petros Giannakouris)