Accession of Macedonia to NATO
Following an agreement in June 2018 to rename the country the Republic of North Macedonia, NATO agreed to consider extending an invitation to the country to join at its summit on 11–12 July. On 11 July 2018, NATO invited Macedonia to begin membership talks, saying the country could join the organization once the naming issue was resolved. Formal accession talks began on 18 October 2018. Greece is expected to be the first NATO member state to ratify Macedonia’s NATO accession protocol.
Enlargement of NATO
At the 1999 Washington summit, where Hungary, Poland, and the Czech Republic officially joined, NATO also issued new guidelines for membership with individualized "Membership Action Plans" for Albania, Bulgaria, Estonia, Latvia, Lithuania, Macedonia, Romania, Slovakia, and Slovenia. In May 2000, these countries joined with Croatia to form the Vilnius Group in order to cooperate and lobby for common NATO membership, and by the 2002 Prague summit seven were invited for membership, which took place at the 2004 Istanbul summit. Russia was particularly upset with the addition of the three Baltic states, the first countries that were part of the Soviet Union to join NATO.