ZAGREB, Jan 22 (Hina) - Croatian President Stjepan Mesic said on Friday he could not understand the reaction of his Serbian counterpart Boris Tadic who said that he would report Mesic to the UN Security Council for his statement on a military intervention in the event of a secession referendum in the Bosnian Serb entity. Mesic said that he was not interfering either in relations in Bosnia-Herzegovina or in relations in Serbia.