The EU bilateral trade strategy since 2006, including the TTIP, has been justified by the European Commission on the bases that deep and comprehensive trade agreements are compatible with efficient multilateralism. The Commission argument is the following: in a context marked by International supply-chains, preferential agreements that allow for progress on what has been achieved at the multilateral level (topics WTO +) and in areas not already covered by the WTO (items WTO- X) may be considered as a stepping stone, not a stumbling block for multilateral liberalization. In other words, EU recent bilateral negotiations and agreements should be seen at worst as complementary to multilateral negotiations and at best as promoters.