摘要:The key concern of the present paper revolves around the idea that in many aspects effective environmental policy integration has proved to be very difficult to be applied in practice and it has largely remained at a rhetorical level.The authors develop this theme,placing at the core of the analysis the most visible and supranational institution,the executive-bureaucratic arm of the EU: the European Commission,whose role in protecting environmental values is seen also in terms of its new agenda,this time without a portfolio dedicated exclusively to the environment.Authors’ main contribution lies in the fact that,unlike other studies that focus primarily on a sterile analysis of the European Commission’s functions,they shed light on this EU institution’s right of initiative through the Principle of Environmental Integration (PEI).The paper emphasizes that one of the factors that prevents the Commission to make use more often of PEI is rooted in the ambiguous legal nature of PEI.In this respect,useful clarifications were made.