Dispute Settlement Mechanisms (PTA-DSMs), which have been used to adjudicate general exception clauses within the context of the individual PTA Members' obligation to liberalize trade in goods. Although the results remain limited to the single issue of PTA-DSM adjudication for liberalization of trade in goods, they are indicative of key misconceptions regarding the fragmentation of ITL. As the findings confirm, the PTA-DSMs assessed have ultimately come to equivalent decisions, taking into consideration their overall use, the nature of the legal commitments embedded in the respective PTAs, and the economic wellbeing of the respective PTA partners. The book reveals the influence of specific PTA-DSMs on other PTA-DSMs and thereby paves the way for legal unification, rather than fragmentation.