The objective of this chapter will be to study the impact of the war and the economic sanctions taken against Russia on its port traffic of goods in the Baltic Sea and more particularly on the containerised and liquid bulk traffic. For this purpose, we will use the AIS data (see section on method and data) to analyse the calls of merchant ships in Russian Baltic Sea ports by making a comparison over the same two periods of 2020 and 2022, from 11 to 31 May. The objective of this parallel between these two years will be to evaluate the evolution of the calls of the merchant ships studied and thus to know over this period Russia has undergone an impact on its maritime connections and thus on its foreign trade relations.