Brussels, 19/03/2004 (Agence Europe) - The future Spanish Prime Minister, José Luis Rodriguez Zapatero, will participate at the Party of the European Socialists (PES) Summit on 24 March in Brussels. This takes place on the eve the European Council of 25 and 26 March, and will open the discussion on the fight against terrorism. A press release states that the Socialist Summit will take place on Wednesday evening at the European Parliament, with several prime ministers and party heads attending. Preparation for the Spring Summit will be discussed, and a possible successor to Robin Cook, PES President who will not be seeking re-election. The PES Congress of 23 and 24 April will appoint a new President and adopt the Manifesto for the European elections in June.