More than a million migrants and refugees crossed into Europe in 2015, and of that group, Syrians make up the largest nationality of those seeking asylum. Overall, there are more than 4 million Syrians displaced by their nation's five-year civil war, and currently more than 2 million live in Turkey. Nearly 90 percent of the refugees are now living outside of traditional refugee camps, presenting a whole new set of challenges for international relief agencies. On Sunday, NewsHour Special Correspondent Mike Cerre reports on the living conditions of Syrian refugees in Turkey.