Abstract: This article explores the relations between the regional trade agreements (RTAs) signed within the framework of the WTO or by WTO. To examine the object of relationship between RTAs and WTO, the subjects of the research are the regime of most favoured nation (MFN), regional trade agreements, as well as the legal nature of the WTO and responsibilities it sets. The author creates a visual example to demonstrate how countries violate the regime of MFN using RTAs. The work explores the practice of the Dispute Settlement Body of the WTO on this issue, as well as provides theoretical substantiation on why signing RTAs does not mean violating the law of WTO de lege lata. Theoretical conclusions of some of the research leads the author to conclude that regional trade agreements represent lex posterior or lex specialis with regards to responsibility of the states before WTO.

Abstract: This article explores the relations between the regional trade agreements (RTAs) signed within the framework of the WTO or by WTO. To examine the object of relationship between RTAs and WTO, the subjects of the research are the regime of most favoured nation (MFN), regional trade agreements, as well as the legal nature of the WTO and responsibilities it sets. The author creates a visual example to demonstrate how countries violate the regime of MFN using RTAs. The work explores the practice of the Dispute Settlement Body of the WTO on this issue, as well as provides theoretical substantiation on why signing RTAs does not mean violating the law of WTO de lege lata. Theoretical conclusions of some of the research leads the author to conclude that regional trade agreements represent lex posterior or lex specialis with regards to responsibility of the states before WTO.