NATO - Statistics & Facts

The North Atlantic Treaty Organization (NATO) is a military alliance of 31 countries (29 European nations, the United States, and Canada). Founded in 1949, the alliance was one of the cornerstones of the West's defense strategy during the Cold War, with an attack on one member considered to be an attack on all of them. After the Cold War ended, NATO grew in size to include Czechia, Poland, and Hungary in 1999, with seven more countries joining in 2004. Some of the most recent additions to the alliance are Albania and Croatia, who joined in 2009, then Montenegro, who joined in 2017, and North Macedonia in 2020. Finland is the most recent country to join the alliance, applying in 2022 following the Russian invasion of Ukraine, and being accepted as a NATO member on April 4, 2023.

Cracks in the alliance during the Trump years

In late 2019, French President Emmanuel Macron warned that NATO was becoming "brain dead" primarily due to a wavering commitment to the alliance by then-U.S. president, Donald Trump. As President, Trump was scathing of the coalition, mainly due to other NATO members' comparatively low defense expenditure. Trump also went out of his way to criticize member states that were not spending the NATO target of at least two percent of their GDP on defense. Although the threat of the United States leaving the alliance disappeared when Joe Biden became President in 2021, the issue is likely to return if Trump returns to power. The Russian invasion of Ukraine in 2022 has recently highlighted the importance of the alliance for Western powers. Russia's attack on Ukraine in February 2022 was preceded by demands to NATO to halt the further growth of the alliance, with Ukraine's membership aspirations portrayed as a security threat by Moscow. NATO ultimately rejected these demands as it contradicted the alliance's established "open-door" policy, whereby any European nation is free to join the coalition if they choose to do so.

Evolution of NATO

Formed in the aftermath of World War Two, NATO's initial purpose was to deter Soviet expansion, providing collective security to the devastated nations of Western Europe. The alliance grew larger in the face of increasing Cold War tensions and incorporated the armed forces of West Germany in 1955. In response to this, the U.S.S.R created its own collective security alliance, the Warsaw Pact. Throughout the Cold War era, NATO and the Warsaw Pact scaled up their military capabilities in Europe, with the United States having 80 military bases in European NATO countries by 1987, with almost half of them in Germany. The collapse of the Soviet Union was followed by the dissolution of the Warsaw Pact in 1991, and various waves of NATO enlargement beginning in 1999. Although the Cold War had ended, NATO was still considered to be a crucial part of Europe's security architecture, and played a prominent role in the Yugoslav Wars during the 1990s. The collective defense principle of NATO enshrined in Article 5 of its founding treaty was invoked for the first and only time following the 9/11 terrorist attacks on the United States in 2001, leading directly to the alliance's involvement in the War in Afghanistan (2001-2021).
This text provides general information. Statista assumes no liability for the information given being complete or correct. Due to varying update cycles, statistics can display more up-to-date data than referenced in the text.
Published by Statista Research Department, May 30, 2023

Key insights

Number of NATO member states
31
Combined number of active personnel in NATO
3.3m
Combine defense expenditure of NATO allies
1.2tr USD
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