The paper examines the strategic stability and the e¢ ciency of free trade networks. We reconsider the endogenous tari¤ model introduced by Goyal and Joshi (2006). Di¤erent from their analysis with myopic countries, we adopt a new solution concept, pairwise farsighted stable set (Herings, Mauleon and Vannetelbosch, 2009, GEB), to examine the formation of free trade agreements (FTAs) as a networ...