The subject of this doctoral thesis revolves around the analysis of the links between foreign policy and international trade, along with one chapter that is of more methodological nature. In chapter1 I show how geopolitical interests are a key motivation for economic integration agreements. Big countries systematically negotiate and sign these agreements with smaller countries that offer political benefits at the expense of economic ones. Chapter 2 provides an empirical analysis into the effect of sanctions on sanctioning countries—their exports in particular. In this joint work with Matthieu Crozet, we study the macro-impact of the sanctions regime against the Russian Federation on export flows from Western countries and the micro-impact o...