Summary
Highlights
NATO was founded in 1949 as a military defensive system against the Soviet threat. Initial members included the US, Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, Netherlands, Norway, Portugal, and the UK. Greece and Turkey joined in 1952, West Germany in 1955, and Spain in 1982. After the fall of the Soviet Union in 1991, NATO's expansion slowed due to uncertainty about Russia's reaction. However, the Partnership for Peace initiative in 1994 opened doors for former Warsaw Pact countries. Hungary, Czech Republic, and Poland joined in 1999, followed by Bulgaria, Slovakia, Romania, Slovenia, and the Baltic states in 2004. Albania and Croatia joined in 2009, Montenegro in 2017, and North Macedonia in 2020. Finland joined in 2023, and Sweden's membership was ratified in 2024, after some delays.
NATO's core principle is collective defense, outlined in Article 5 of its treaty, stating that an attack on one member is an attack on all. NATO's first major operation was in Bosnia-Herzegovina in the early 1990s, enforcing a no-fly zone. NATO's headquarters are in Brussels, where decisions require unanimity. However, member states can also act individually or in smaller groups. The organization has two main strategic commands: Allied Command Operations in Mons, Belgium, responsible for military operations, and Allied Command Transformation in Virginia, USA, focusing on military capabilities and doctrine. The North Atlantic Council, led by the NATO Secretary General (currently Jens Stoltenberg), is the highest governing body. Member states finance their own armed forces, which are available for NATO operations. In 2023, the total defense spending of NATO members was around $1 trillion, with the US contributing 70%. The goal is for members to spend at least 2% of their GDP on defense by 2024, a target met by 11 out of 30 members, including Hungary and the US. Poland is a top spender at 3.9% of its GDP.
After the dissolution of the Soviet Union, Russia attempted to maintain unity through the Commonwealth of Independent States, but this was largely unsuccessful. Russian forces withdrew from Central and Eastern Europe and other post-Soviet states. Russia maintains military bases abroad, primarily in former Soviet republics. Russia is a member of the Collective Security Treaty Organization (CSTO), envisioned as a 'light version' of NATO. Its members include Armenia, Belarus, Kazakhstan, Kyrgyzstan, and Tajikistan, in addition to Russia. Similar to NATO's Article 5, CSTO's Article 4 states that aggression against one member is considered aggression against all. Members are prohibited from joining other military alliances and must refrain from threats or aggression.
The relationship between NATO and CSTO is strained, with Russia believing the US violated agreements by expanding NATO eastward. While the US disputes this, NATO has indeed moved closer to Russia's borders. Interestingly, in 2000, Vladimir Putin expressed interest in Russia joining NATO, viewing Russia as part of European culture, though no formal application was ever made. Tensions escalated after the 2008 Bucharest NATO summit, where promises were made to admit Ukraine and Georgia, which Russia opposed. Russia invaded Georgia that summer. In 2014, Russia annexed Crimea after a disputed referendum and destabilized eastern Ukraine. NATO then suspended all cooperation with Moscow. In 2021, Putin threatened invasion unless NATO halted its expansion and linked some NATO operations to Russian contributions. These demands were rejected, leading to Russia's full-scale invasion of Ukraine in 2022.
According to Global Firepower, NATO significantly outnumbers Russia in total personnel, with 5.5 million soldiers to Russia's 1.3 million. NATO has around 1.5 million active personnel and 649,000 reservists, while Russia has 810,000 active personnel and 187,000 reservists. In terms of air power, NATO has 5,253 aircraft (including 2,072 helicopters and 381 transport planes), compared to Russia's 3,173 aircraft (including 1,148 helicopters and 333 transport planes). However, Russia has more combat aircraft (558) than NATO (277) and more fighter/interceptor jets (881 for NATO vs. 580 for Russia). On land, Russia has significantly more tanks (9,425) than NATO (3,184). For armored combat vehicles, NATO has more (251,909) than Russia (113,731). At sea, NATO also holds an advantage in naval vessels, with 687 ships compared to Russia's 449. Russia has more submarines (53) than NATO (37), but NATO has more destroyers (28) than Russia (11). In terms of aircraft carriers, NATO has four, while Russia has only one. These numbers, however, don't account for the condition of the equipment, the training of personnel, or the effectiveness of military planning.