is particularly important is the link between terrorism and all forms of organized, transnational and cross-border crime. Proliferation of weapons of mass destruction is potentially the greatest threat to global and European security, and therefore the real threat to the security of the Republic of Serbia. The danger that weapons of mass destruction could come into possession of the structures the state has no control of, especially terrorist groups and individuals, is a particular threat to security. National and religious extremism, which has roots in the conflicts on ethnic and religious grounds in the recent and distant past, is a risk factor and a significant threat to security. The slow pace of democratization of economic and political processes can significantly contribute to the increase of inter-ethnic tensions that can potentially turn into conflicts. Intelligence that the foreign intelligence organizations conduct through illegal and concealed action is the real threat to the security of the Republic of Serbia. It is accomplished through the weakening of its political, economic and security capacities and through the influence on the direction and dynamics of social processes, contrary to national interests. The combination of traditional intelligence methods with sophisticated means makes it difficult for their actions to be detected. Organized crime in the territory of the Republic of Serbia, especially in Kosovo and Metohija, is particularly manifested in the areas of drug trafficking, human trafficking and illegal migrations, as well as in economic and financial sphere, the proliferation of conventional weapons and the possibility of proliferation of weapons of mass destruction. In its nature, organized crime is a serious threat to security and overall development of the state and society. Corruption threatens the fundamental values of society and leads to the decline of trust in state institutions, makes the implementation of essential reforms difficult, slow the transition process, economic development, foreign direct investment and integration processes and to the destabilization of the situation in the country and region. 11