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.
2008 Bucharest summit
As said by Craig Kennedy in an introduction to the NATO Bucharest summit and from the NATO summit program.Romania competed for the organization of this summit with Portugal, which initially was scheduled to host the summit in 2006, but eventually conceded in favor of Latvia, which held the 2006 Riga Summit. Romania received support from the United States, and U.S. Under Secretary of State R. Nicholas Burns said in December 2006 that Romania deserved the honor to hold this event due to its contribution to the Alliance's common effort in the War in Afghanistan and for stability in the Iraq War. Romania has been a member of NATO since 14 March 2004.