European Police Office (Europol) was created out of the need of the Member States of the European Union police interstate cooperation in the fight against terrorism, drug trafficking and other forms of international crime (Annex of the Convention). Europol represents the foundation of the wider European structures of internal security. The headquarters is in the Netherlands in The Hague. The EU Member States co-operate across national liaison officers, and with third countries through the national contact points. Cooperation is achieved by exchange of strictly protected and protected personal data. The basic document of Europol's activities is the decision of the Council based on the Convention, Annex of the Convention and the Treaty of Lisbon. The Republic of Croatia is a full member of the European Union and Europol with many of its own opportunities, but with its own operational needs. At beginning of the year European Centre for Counter-Terrorism (ECTC) is founded beacuse of the possibility for attacks by ISIL or other religious terrorist groups.