Since 2011 there has been an increase in the number of refugees in Europe. Most of these
refugees are Syrian refugees. This wave of Syrian refugees could occur because of the
civil war in Syria. This prompted the formation of an EU-Turkey treaty to address the
refugee crisis that occurred in the European Union. the purpose of this research is to
analyze and to find out whether the EU-Turkey Joint treaty for refugees crisis has
violated the application of the principle of non-refoulement as the key principle in
international refugee law and form of state responsibility of EU state and Turkey for
violations of the principle of non-refoulement committed to Syrian refugees. This thesis
uses normative research methods by reviewing literatures studies from convention,
protocol, books, journals, and some sources from the internet which are related to nonrefoulement
principal. The result of this research show, EU-Turkey Joint action is a form
of European Union state and Turkey violation of the non-refoulement principle regulated
in Article 33 paragraph (1) of the 1951 Convention giving rise to state responsibility, and
state responsibility appears difficult to implement, especially for EU countries, this is
because the EU is not one voice in dealing with refugee problems