NATO 3.0: A Stronger Europe, a Stronger Alliance?

NATO’s ability to adapt to internal divisions and external threats was tested again during the 2026 NATO Summit on 7-8 July in Ankara, Turkey. Questions surrounding President Donald Trump’s commitment to the Alliance, disagreements over burden-sharing and defence spending, and emerging security challenges in Europe, its periphery, and beyond placed significant pressure on the meeting. While the summit did not resolve these concerns, it offered cautious optimism and renewed reassurance under the framework of NATO 3.0.

NATO 3.0 presents both risks and opportunities that require commitment and burden-sharing among member states. Since its establishment in 1949, NATO has adapted its deterrence and defence strategies, evolving over the years in response to changing threat actors and the security landscape. NATO 1.0, which was primarily based on Cold War rationale, was built to contain the Soviet Union. NATO 2.0 refers to the post-Cold War era, during which the Alliance focused primarily on counterterrorism, following the al-Qaeda terrorist attacks on 11^th September 2001. NATO invoked Article 5[i] for the first time in its history, treating the al-Qaeda attacks as an armed attack requiring collective defence in support of the United States against a non-state actor.

NATO 1.0 and NATO 2.0 paradigms are insufficient to address the social, political, economic, and military landscapes shaped by the evolving global order, the Russian invasion of Ukraine, China’s expanding global influence, and the evolving nature of terrorism and other non-traditional security threats, including in cyberspace.

NATO 3.0 reflects NATO’s evolving threat posture and response strategies, which include both state and non-state threats. This integrated threat assessment is reflected in the Ankara Summit Declaration[ii] as “the long-term threat Russia poses to Euro-Atlantic security and stability, and the persistent threat of terrorism.”

Europe faces mounting security challenges across Eastern Europe, particularly in Ukraine, as well as in the Western Balkans, the South Caucasus, the Sahel and Maghreb, and the Middle East, including the Israel-Palestine conflict and the recent US-Israel-Iran war. To counter existing and future security threats, Europe must do more than rely on US security guarantees and defence support. Initially, the NATO 2026 Summit was overshadowed by deep concerns that the US, under President Trump, might withdraw from the Alliance. For too long, European policymakers believed that NATO and US support within NATO would prevent any war in Europe, contributing to decades of military downsizing and a decline in investment[iii] in defence and deterrence. This assumption, which has taken US support for granted, has proven short-sighted and reflects a failure to adapt to the post-Cold War security environment. Despite warnings from previous US officials about this near-existential misperception, the European defence posture has remained largely unchanged until recently. For example, almost 15 years ago then US Secretary of Defense Robert Gates[iv] of the Obama Administration voiced the US disapproval of Europe’s complacency over international security and lack of necessary commitment to defence spending for NATO: “If the current trends in the decline of European defence capabilities are not halted and reversed, future U.S. political leaders—those for whom the Cold War was not the formative experience that it was for me—may not consider the return on America’s investment in NATO worth the cost.”

During his first term, President Trump conditioned US support for NATO allies on their contributions to the Alliance. His position has become more assertive, as he has openly and repeatedly criticized European allies’ reluctance to increase their defence spending in NATO. He even suggested that the United States could withdraw from NATO altogether. Despite such concerns, the Summit emerged as a unified Alliance once again. President Trump opened the summit by criticising the Europeans for not providing support for the U.S. war with Iran. However, following the leaders’ closed-door discussions, President Trump expressed a highly positive view, saying, “There was a lot of love in that room, a lot of unity.”[v]

The second key takeaway from the Summit is that NATO members reached a consensus on “the long-term threat Russia poses to Euro-Atlantic security and stability and the persistent threat of terrorism”. More importantly, the Summit Declaration details[vi] the steps the allies are taking to counter these threats, including “delivering the capabilities,” strengthening NATO’s “industrial base and resilience,” committing to “expanding collective manufacturing capacity” and accelerating innovation.

Third, the reaffirmation of “unwavering support for Ukraine” demonstrated Alliance unity against Russia, with allies pledging €70 billion in military equipment, assistance, and training, and maintaining support at least at comparable levels in 2027. While the US will not contribute to this aid, the Trump administration has provided Ukraine with something else: “a license to produce Patriot missiles in Ukraine,”[vii] which could be a crucial capability for defending against Russia’s attacks on civilians and critical infrastructure.

Moreover, the Declaration emphasizes “a stronger Europe in a stronger NATO,” with European Allies and Canada taking greater responsibility while working with the United States. NATO members also committed to delivering the Alliance’s capability targets spanning conventional military operations and intelligence, and to “developing an interoperable transatlantic[viii] warfighting cloud and adopting powerful AI models.” NATO 3.0 also reflects, as some call it, the Europeanization of NATO[ix], referring to European countries’ increasing defence spending and military investment in NATO.

Another significant outcome of the summit was Turkey’s realignment with NATO after years of dispute over the purchase of Russian S-400 missile defence systems and its disruptive behaviour at previous NATO meetings, especially when Ankara initially blocked Sweden and Finland’s NATO accession bids.[x] Ankara’s pursuit of rapprochement with Russia has come at the expense of Turkey’s decades-long alliance with NATO – and at a considerable cost. The policy has failed on multiple fronts: Turkey has been unable to activate the Russian-made S-400 system. It has also faced U.S. sanctions under the Countering America’s Adversaries Through Sanctions Act (CAATSA)[xi], and was expelled from the F-35 fighter jet program. Ankara has since come to recognize, rather agonizingly, the vital security umbrella NATO provides, particularly after NATO defence systems intercepted Iranian ballistic missiles targeting Turkey. Besides hosting the 2026NATO Summit, and contrary to its previous position, Ankara has begun to realign with the Alliance’s defence and security priorities, including by actively participating in NATO’s military mission in Estonia.

The 2026 NATO Summit Declaration[xii], if fully implemented, signals a critical shift in NATO’s transition from strategic commitments to concrete operational implementation. It prioritizes increased burden-sharing among European NATO member states through higher defence spending, expanded procurement, and stronger defence-industrial capacity. The Declaration also highlights NATO’s future defence posture, which will depend on cyber capabilities, AI, autonomous systems, integrated air and missile defence systems, and a more robust defence industrial base.

Ultimately, however, translating declarations of unity into measurable outcomes will require sustained political commitment and implementation. Only time will tell whether “a stronger Europe in a stronger NATO” will produce a more credible and effective deterrent Alliance.