The number of migrants arriving in Europe after fleeing war and poverty in the Middle East and Africa is down from the peak of the crisis in 2015. But in 2018, tens of thousands continued to risk the dangerous journey across the Mediterranean. The huge influx of refugees—almost 2 million in the past few years—has prompted a backlash in some European countries, including Germany and Italy. Other nations, such as Hungary and Poland, have refused to accept any migrants.