38 Stockholm 1986 and co-operation among themselves as among all States, as set forth in the Declaration on Principles Guiding Relations between Participating States. (24) They reaffirm that, in the broader context of world security, security in Europe is closely linked with security in the Mediterranean area as a whole; in this context, they confirm their intention to develop good neighbourly relations with all States in the region, with due regard to reciprocity, and in the spirit of the principles contained in the Declaration on Principles Guiding Relations between Participating States. so as to promote confidence and security and make peace prevail in the region in accordance with the provisions contained in the Mediterranean chapter of the Final Act. (25) They emphasize the necessity to take resolute measures to prevent and to combat terrorism, including terrorism in international relations. They express their determination to take effective measures, both at the national level and through international cooperation, for the prevention and suppression of all acts of terrorism. They will take all appropriate measures in preventing their respective territories from being used for the preparation, organization or commission of terrorist activities. This also includes measures to prohibit on their territories illegal activities, including subversive activities, of persons, groups and organizations that instigate, organize or engage in the perpetration of acts of terrorism, including those directed against other States and their citizens.