Part I Setting the Scene: Peter-Tobias Stoll, Mega Regionals: Challenges, Opportunities and Research Questions -- Part II Strategic and Structural Issues: Edouard Bourcieu, The Strategic Dimension of the Transatlantic Trade and Investment Partnership -- Ernst-Ulrich Petersmann, Democratic Legitimacy of the CETA and TTIP Agreements? -- Joost Pauwelyn, Not As Preferential As You May Think: How Me…