Leaders and representatives of Greek Cypriot and Turkish Cypriot political parties participating in the bicommunal dialogue under the auspices of the Embassy of the Slovak Republic in Nicosia, called on the parties that will participate in the upcoming multilateral conference on the Cyprus issue in July to engage in negotiations on the substance of the Cyprus problem in good faith and with the aim of reaching a comprehensive and sustainable solution as soon as possible, based on the United Nations resolutions, international law and the European acquis communautaire.