For Migrants Seeking a Better Life, Serbia Stands at Gateway to Western Europe

For most of the migrants in Serbia, the former Yugoslav republic is their last stop before entering Hungary, their gateway to western Europe.

Migrants from Syria sleep at the Belgrade train station, Serbia, May 20, 2015. Many migrants don't have enough money to stay in hotels and rent rooms, ending up sleeping at train stations, bus terminals and in parks in the Serbian capital. (Marko Drobnjakovic)Marko Drobnjakovic / for NBC News