“Sovereignty” became a keyword of European Union diplomacy in 2018. The return of geopolitics greatly strengthened the European Union’s sense of surviving in crisis and the necessity of guarding its border. For the sake of maintaining independence，the EU required its member states for solidarity to stand on European feet. The European integration saw some progresses through common defense construction in 2018. Quite deep cleavages have emerged in the transatlantic relation，one of which is the tariff war launched by the United States against its major trade partners including the EU. Although a truce was reached between the US government and EU Commission on September 2018，the contradiction between the two sides has not been alleviated yet. The European relationship with Russia is still tense and EU’s economic sanctions against Russia stand still，although the EU’s energy dependence on Russia is heavy. The China-EU relationship has maintained relative stability and the Bilateral Investment Treaty talks saw some progresses in 2018. Africa became the new hotspot of EU diplomacy and investment，and the EU-Africa relationship displays rather bright future.