The subject of this diploma paper is international protection of the refugees with a special overview of the refugee crisis in Europe 2015./2016. The determination of a refugee refers to a person who is outside of a country of it's citizenship, because of a justified fear of a racial prosecution, religion, nationality, belonging to a specific social group or because of a political attitude and it is impossible for that person to use, or because of a fear that person doesn't want to use protection of it's country. Definitions of a migrant and a refugee will be confined, because it is important to point out the fact that the migrants don't move from countries of their citizenship to save their lives, they move to have better income, better education or better life standard. In this diploma paper the historical development of the international refugee law will be shown, from the end of the World war 1. till today. The most important international refugee law sources will be enumerated, and the Convention for protection of the refugees from 1951. will be detaily displaied in it's most highlighted articles. All the rights that belong to the refugees by the international law will be described, along with the obligations that the refugees have for the country of acceptance and for it's citizens. The most important international govermental and nongovermental organisations, whose main puspose is protection of the refugees, will be described and named. Also, there will be a special overview of the refugee crisis in Europe 2015./2016. There will be talk about the european immigration politics, as well as how different countries of the European Union apply that politics. Regarding that politics, there will be words about the visa system of the European Union. The situation in Hungary and Croatia regarding the refugee crisis will be described to point out two completely differend stands towards the refugees which came to Europe from countries such as Syria and Iraq which are destroyed by war. The possible solution of the european immigration politics adjustment will be indicated.