Is NATO a force of good in the world?
Is NATO a force for good? I'll gather its track record, successes and controversies to give you a balanced answer.
Whether NATO is a force for good in the world is debated and depends on perspective, values, and which actions are emphasized. NATO itself and its supporters and critics make different arguments:
What NATO is
The North Atlantic Treaty Organization (NATO) was formed in 1949 and is one of the most successful military alliances in history; its headquarters is in Brussels.
It was born on April 4, 1949, in Washington, D.C., with 12 founding members. According to NATO’s official history, the alliance was built around three core goals: “deterring Soviet expansionism, forbidding the revival of nationalist militarism in Europe through a strong North American presence on the continent, and encouraging European political integration.”
More broadly, NATO was founded in 1949 in the aftermath of World War II, with the purpose of securing peace and security in Europe, and its fundamental purpose is to safeguard the security of its members including the use of armed force, to restore and maintain peace.
A U.S. Senate aide described it as “The NATO security alliance remains the greatest combined force for good in world history, defending our freedom and democracy around the globe,” - a view shared by many Atlantic supporters.
Arguments That NATO Is a Force for Good
1. Deterrence and long-term stability:
Proponents point to NATO’s principal successes include deterrence stability, institutional longevity, and adaptive capacity. The Alliance has outlasted its original adversary and remained central to Euro-Atlantic security.
Its open-door policy for qualified countries has contributed greatly to transatlantic security since the first round of enlargement in 1952, helping to ensure that the alliance became the prime guarantor of security in Europe. That open-door policy has been a crucial driver of modernization and reform in candidate countries, has promoted stability and peace in Europe.
It is credited with having Stopped expansion of communism and being recognized “for the Alliance’s role in assuring peace, stability, and security in Europe and North America for the last seventy years.”
2. Crisis management and peacekeeping:
Following the Cold War, NATO is viewed as having outperformed other organizations in bringing peace, albeit belatedly, to the Balkans—first in Bosnia and later in Kosovo. Notable success stories, such as the Kosovo Force (KFOR) and the International Security Assistance Force (ISAF) in Afghanistan, exemplify NATO’s capacity to effectively address complex security challenges and restore stability in conflict-affected regions.
3. Collective defense:
NATO's Article 5, the cornerstone of the alliance, famously declares that an armed attack against one member "shall be considered an attack against them all," explicitly allowing for the use of armed force in response. It has been invoked only once, following the 9/11 terrorist attacks on the United States, which led to military operations in Afghanistan. The 2001 Article 5 contingency is the only time in NATO's history its collective defense provisions have been invoked, with allies fighting and dying alongside the U.S. in Afghanistan.
4. Public support in member states:
Public opinion in member countries tilts positive. A median of 65% in 13 member nations have a favorable opinion of the security alliance, while in another measure NATO is seen in a positive light across most of the 13 member nations surveyed: A median of 66% have a favorable view of the alliance.
In the U.S., a majority of Americans (57%) have a favorable view, with one 2025 survey finding 68 percent of Americans now report a favorable view of NATO, the highest percentage since the survey began in 2018.
Criticisms and Arguments That It Is Not
1. Expansion and relations with Russia:
NATO’s expansion and actions have sparked debates. Russia views NATO’s eastward enlargement as a threat, particularly the potential membership of Ukraine and Georgia. Critics argue that NATO’s expansion eastward after the end of the Cold War has contributed to tensions with Russia and undermined stability in Europe, with key arguments against NATO expansion including the concern that it will exacerbate tensions with Russia.
Others argue that NATO’s mission has become too expansive, and that it has engaged in military interventions that are beyond its original mandate.
2. Controversial interventions:
The 1999 Kosovo bombing, the 2011 intervention in Libya, and the 20-year war in Afghanistan are frequently cited.
Regarding Libya: Criticisms and Controversies Surrounding NATO’s Involvement in Libya have been multifaceted. One significant critique revolves around the civilian casualties resulting from NATO airstrikes, raising questions about the extent of collateral damage in the pursuit of military objectives. Some factions have accused NATO of overstepping its mandate by prolonging its intervention beyond stated objectives.
Afghanistan, while initially seen as legitimate collective defense, ended with the Taliban returning to power, leading critics to question effectiveness. Kosovo remains contested by some who view the bombing of Serbia without UN Security Council authorization as illegal.
3. Critiques from the left and right:
From the left, NATO is sometimes seen as a U.S.-led intervention force serving strategic and energy interests rather than purely defensive purposes, and as overly militaristic and not a specialist in de-escalation. From the right/isolationist perspective, critics in the U.S. argue NATO is a taxpayer drain where allies do not spend enough on defense, and that the U.S. bears disproportionate costs. Some anti-war voices argue all military alliances perpetuate conflict.
Conclusion
Supporters see NATO as a defensive alliance that has prevented major war in Europe for over 75 years, protected democracies, deterred aggression, and provided a framework for cooperation on issues from peacekeeping to cyberdefense and disaster response.
Critics see it as a Cold War relic that has provoked insecurity, acted aggressively beyond its borders, and contributed to instability.
Whether it is judged a "force for good" often depends on whether one weighs its record of deterrence and peacekeeping in Europe more heavily than its controversial out-of-area wars and the geopolitical tensions linked to its enlargement.