Enlargement of NATO
As of 2018, NATO officially recognizes four aspiring members: Bosnia and Herzegovina, Georgia, Macedonia and Ukraine. The Federation of Bosnia and Herzegovina within Bosnia and Herzegovina has expressed willingness to join NATO, however, it faces consistent political pressure from Republika Srpska, the other political entity in the country, alongside its partners in Moscow. Macedonia has been prevented from joining the alliance by Greece, one effect of the Macedonian naming dispute. Future expansion is currently a topic of debate in several countries outside the alliance, and countries like Sweden, Finland, and Serbia have open political debate on the topic of membership, while in countries like Ukraine, support and opposition to membership is tied to ethnic and nationalist ideologies. The incorporation of countries formerly part of the Eastern Bloc and the Soviet Union has been a cause of increased tension between NATO countries and Russia.
Milorad Mirčić
Mirčić was a Radical Party vice-president at the republic level in this period and continued to speak for the party on a variety of issues. He opposed the prospect of Serbia joining the North Atlantic Treaty Organization (NATO) in 2007, saying, "The United States is creating hotspots in the world and NATO does the dirtiest work in the field. We do not want to be a part of that." He also said, "by joining NATO, [Serbia] would be making a major concession to the advocates of independence for Kosmet [Kosovo-Metohija], because the alliance's strategy is not to interfere in internal conflicts in its member-nations." Ultimately, Serbia did not join the military alliance.