Revision with unchanged content. Trade negotiations are a topic of growing importance, and the popularity of bilateral and regional trade deals as an alternative to slow negotiations at the World Trade Organization (WTO) is growing. But so is the anti-free trade sentiment among environmental and social-justice associations. Today, an important question is how free trade can be designed in a sustainable way. Based on the theoretical concept of two-level diplomacy, Astrid Fritz Carrapatoso analyzes whether domestic consultations help to further integrate trade-related environmental issues into trade agreements. Because the domestic dimension of international negotiations is often neglected, this study focuses on consultation procedures between the government and interest groups. Determinants for the integration of environmental aspects into trade agreements can thus be worked out. The book is aimed at scholars and students in the field of social sciences, economics, environmental studies, journalists interested in global and regional trade issues as well as environmental themes, politicians dealing with trade and environment issues and NGOs and other interest groups working in the environmental and/or trade sector.