Ukrainian President Volodymyr Zelensky signed a security pact with the European Union providing long-term assurances, at a summit of EU leaders in Brussels on Thursday. Zelensky signed the accord in a ceremony along with European Council President Charles Michel and European Commission President Ursula von der Leyen. Thanking EU leaders for their help, Zelensky called for more arms and stronger sanctions on the Kremlin as the “existing pressure on Russia” was not enough to stop the war. The agreement between the EU and Ukraine was drawn up after months of talks among the 27 EU member states to…