The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance of 32 member states—30 European and 2 North American. Established in the aftermath of World War II, the organization implements the North Atlantic Treaty, signed in Washington, D.C., on 4 April 1949. NATO is a collective security system: its independent member states agree to defend each other against attacks by third parties. During the Cold War, NATO operated as a check on the threat posed by the Soviet Union. The alliance remained in place after the dissolution of the Soviet Union and the Warsaw Pact, and has been involved in military operations in the Balkans, the Middle East, South Asia, and Africa. The organization's motto is animus in consulendo liber. The organization's strategic concepts include deterrence.
The Visegrád Group is a cultural and political alliance of four Central European countries: the Czech Republic, Hungary, Poland, and Slovakia. The alliance aims to advance co-operation in military, economic, cultural and energy affairs, and to further their integration with the EU. All four states are also members of the European Union (EU), the North Atlantic Treaty Organization (NATO), and the Bucharest Nine (B9).
The European Union (EU) has expanded a number of times throughout its history by way of the accession of new member states to the Union. To join the EU, a state needs to fulfil economic and political conditions called the Copenhagen criteria, which require a stable democratic government that respects the rule of law, and its corresponding freedoms and institutions. According to the Maastricht Treaty, each current member state and the European Parliament must agree to any enlargement. The process of enlargement is sometimes referred to as European integration. This term is also used to refer to the intensification of co-operation between EU member states as national governments allow for the gradual harmonisation of national laws.
The Partnership for Peace is a North Atlantic Treaty Organization (NATO) program aimed at creating trust and cooperation between the member states of NATO and other states mostly in Europe, including post-Soviet states; 18 states are members. The program contains 6 areas of cooperation, which aims to build relationships with partners through military-to-military cooperation on training, exercises, disaster planning and response, science and environmental issues, professionalization, policy planning, and relations with civilian government. During policy negotiations in the 1990s, a primary controversy regarding PfP was its ability to be interpreted as a program that is a stepping stone for joining NATO with full Article 5 guarantees.
Eurocorps, located in the French city of Strasbourg (Bas-Rhin), is a multinational corps headquarters. Founded by France and Germany in 1992, it is today composed of personnel from six framework nations and five associated nations. The framework nations place the Eurocorps at the service of the European Union (EU) and NATO, which certified it in 2002 as one of its nine High Readiness Land Headquarters.
An EU Battlegroup is a military unit adhering to the Common Security and Defence Policy (CSDP) of the European Union (EU). Often based on contributions from a coalition of member states, each of the eighteen Battlegroups consists of a battalion-sized force reinforced with combat support elements. Two of the battlegroups were to be capable for operational deployment at any one time. The civil power that oversees these battlegroups is the Council of the European Union.
International relations between the European Union (EU) and Ukraine are shaped through the Ukraine–European Union Association Agreement and the Deep and Comprehensive Free Trade Area (DCFTA). Ukraine is a priority partner within the Eastern Partnership and the European Neighbourhood Policy (ENP). The EU and Ukraine developed an increasingly close relationship, going beyond co-operation, to gradual economic integration and deepening of political co-operation. On 23 June 2022, the European Council granted Ukraine the status of a candidate for accession to the European Union.
The 2006 Riga summit or the 20th NATO Summit was a NATO summit held in the Olympic Sports Centre, Riga, Latvia from 28 to 29 November 2006. The most important topics discussed were the War in Afghanistan and the future role and borders of the alliance. Further, the summit focused on the alliance's continued transformation, taking stock of what has been accomplished since the 2002 Prague Summit. NATO also committed itself to extending further membership invitations in the upcoming 2008 Bucharest Summit. This summit was the first NATO summit held on the territory of the Baltic states.
The accession of Bosnia and Herzegovina to the European Union (EU) is the stated aim of the present relations between the two entities. Bosnia and Herzegovina has been recognised by the European Union as a "candidate country" for accession since the decision of the European Council in 2022 and is on the current agenda for future enlargement of the EU. Bosnia and Herzegovina takes part in the Stabilisation and Association Process and trade relations are regulated by an Interim Agreement.
The 2008 Bucharest Summit or the 21st NATO Summit was a NATO summit organized in the Palace of the Parliament, Bucharest, Romania on 2 – 4 April 2008.
The accession of Kosovo to the European Union (EU) is on the current agenda for future enlargement of the EU. Kosovo is currently recognized by the EU as a potential candidate for accession.
NATO is a military alliance of thirty-two European and North American countries that constitutes a system of collective defense. The process of joining the alliance is governed by Article 10 of the North Atlantic Treaty, which allows for the invitation of "other European States" only and by subsequent agreements. Countries wishing to join must meet certain requirements and complete a multi-step process involving political dialogue and military integration. The accession process is overseen by the North Atlantic Council, NATO's governing body. NATO was formed in 1949 with twelve founding members and has added new members ten times. The first additions were Greece and Turkey in 1952. In May 1955, West Germany joined NATO, which was one of the conditions agreed to as part of the end of the country's occupation by France, the United Kingdom, and the United States, prompting the Soviet Union to form its own collective security alliance later that month. Following the end of the Franco regime, newly democratic Spain chose to join NATO in 1982.
The Eastern Partnership (EaP) is a joint initiative of the European Union, together with its member states, and six Eastern European countries. The EaP framework governs the EU's relationship with the post-Soviet states of Armenia, Azerbaijan, Belarus, Georgia, Moldova, and Ukraine. The EaP is intended to provide a forum for discussions regarding trade, economic strategy, travel agreements, and other issues between the EU and its Eastern European neighbours. It also aims at building a common area of shared values of democracy, prosperity, stability, and increased cooperation. The project was initiated by Poland and a subsequent proposal was prepared in co-operation with Sweden. It was presented by the foreign ministers of Poland and Sweden at the EU's General Affairs and External Relations Council in Brussels on 26 May 2008. The Eastern Partnership was inaugurated by the EU in Prague, Czech Republic on 7 May 2009.
There are currently nine states recognized as candidates for membership of the European Union: Albania, Bosnia and Herzegovina, Georgia, Moldova, Montenegro, North Macedonia, Serbia, Turkey, and Ukraine. Kosovo formally submitted its application for membership in 2022 and is considered a potential candidate by the European Union. Due to multiple factors, talks with Turkey are at an effective standstill since December 2016.
The accession of Albania to NATO took place in 2009. Albania's relationship with the North Atlantic Treaty Organization (NATO) began in 1992 when it joined the North Atlantic Cooperation Council. In 1994, it entered NATO's Partnership for Peace, which began Albania's process of accession into the alliance. In 1999, the country received a Membership Action Plan (MAP). The country received an invitation to join at the 2008 Bucharest Summit and became a full member on April 1, 2009.
This is a list of crises situations and major protests in countries of Europe since the year 2000.
NATO maintains foreign relations with many non-member countries across the globe. NATO runs a number of programs which provide a framework for the partnerships between itself and these non-member nations, typically based on that country's location. These include the Euro-Atlantic Partnership Council and the Partnership for Peace.
The Deep and Comprehensive Free Trade Areas (DCFTA) are three free trade areas established between the European Union, and Georgia, Moldova, and Ukraine respectively. The DCFTAs are part of each country's EU Association Agreement. They allow Georgia, Moldova, and Ukraine access to the European Single Market in selected sectors and grant EU investors in those sectors the same regulatory environment in the associated country as in the EU. The agreements with Moldova and Georgia have been ratified and officially entered into force in July 2016, although parts of them were already provisionally applied. The agreement with Ukraine was provisionally applied since 1 January 2016 and formally entered into force on 1 September 2017.
The Visegrád Battlegroup or V4 EU Battlegroup is an EU Battlegroup led by Poland, in which the other fellow Visegrád Group countries – the Czech Republic, Slovakia and Hungary participate. It was on standby from 1 January until 30 June 2016 and from 1 July until 31 December 2019. It is scheduled to go on standby in the first half of 2023.
The Three Seas Initiative, known also as the Baltic, Adriatic, Black Sea (BABS) Initiative or simply as the Three Seas, is a forum of thirteen states, in the European Union, running along a north–south axis from the Baltic Sea to the Adriatic and Black Seas in Central and Eastern Europe. The Initiative aims to create a regional dialogue on questions affecting the member states.
Greece 
Bulgaria 
Cyprus 
Romania 
Ukraine (since 2011)
Serbia (since 2016)
European Union 
