(ANSA) - BRUSSELS, APRIL 27 - ''It is clear that the Syrian regime is not complying with its obligations'' for a ceasefire, contained within the plan by UN and Arab League special envoy Kofi Annan. This was said today by Michael Mann, spokesperson for EU foreign policy chief Catherine Ashton, in response to journalists' questions. ''We are very much concerned about the continuing violence despite the ceasefire accepted by the Syrian regime,'' Mann said. ''They promised to withdraw their troops from the cities and this did not happen.'' Mann then reiterated the European Union's full support for the UN observers mission, which will be deployed next week in Syria. ''We hope that the presence of observers,'' said the spokesman, ''will change the situation on the field and are prepared to support this mission from a technical standpoint.'' Mann said that he did not want to ''speculate'' instead on the possibility of military intervention backed by the EU should Annan's mediation efforts not bear fruit. ''We are working for Annan's success,'' he reiterated. (ANSAmed).