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.
Albania–NATO relations
At the 2008 NATO Bucharest summit, NATO member states signed accession protocols for Albania and Croatia. A signing ceremony was held, and witnessed by the foreign ministers of the two countries. Individual NATO member states must ratify the protocols according to their national requirements and procedures. NATO hopes to have this completed by the next NATO summit in April 2009.
In August 2018, Prime Minister of Albania, Edi Rama announced that NATO plans to build its first air base in the Western Balkans near the municipality of Kuçovë in south-central Albania. Also, officials are discussing with the US and the alliance on "modernizing Albanian air capacities". The first phase of the project, expected to commence by the end of 2018 will have an estimated cost of 50 million euros.