NATO's 2026 annual summit is expected to address a demanding agenda centered on three core themes: the future of support for Ukraine as the war with Russia continues into its fifth year, the challenge posed by China's rapidly growing military and technological capabilities, and the governance of emerging technologies — particularly artificial intelligence and quantum computing — that are transforming the nature of warfare and military advantage in ways that existing alliance frameworks were not designed to address.

Ukraine at the Summit

Ukraine's position will remain the most emotionally and politically charged item at the summit. Whether the conversation focuses on ongoing military support or on plans for eventual reconstruction and post-war security arrangements will depend significantly on the state of the conflict at the time of the meeting. The Trump administration's more ambiguous stance on Ukraine support compared to its predecessor has created uncertainty about US commitments that European NATO members must plan around, and the summit will be an important moment for clarifying the alliance's long-term posture toward Ukraine's security and potential membership aspirations.

The China Challenge

NATO's 2022 Strategic Concept formally identified China as posing "systemic challenges" to Euro-Atlantic security for the first time, and successive summit meetings have worked to develop more concrete responses to this challenge. China's growing defense budget, its advances in military technology, its deepening security relationship with Russia, and its assertiveness in the Indo-Pacific are among the concerns that NATO members are grappling with. The alliance's primarily European membership means that responses to China must be coordinated with Indo-Pacific partners and carefully calibrated to avoid unnecessary escalation while maintaining appropriate deterrence.

Emerging Technology Governance

The governance of artificial intelligence in military applications is an increasingly urgent agenda item for NATO as member nations accelerate investment in AI-enabled capabilities including autonomous systems, decision support tools, intelligence analysis, and logistics optimization. The alliance has developed principles for responsible AI use in defense contexts, but translating these principles into operational guidelines and ensuring consistent implementation across 32 member nations with different technical capacities, legal frameworks, and risk tolerances presents significant challenges that the summit will need to address.

Alliance Cohesion

The summit will also be an important test of alliance cohesion at a moment when transatlantic relations are under significant stress from trade disputes, differences over defense burden-sharing, and the disruptive effect of the Trump administration's foreign policy approach on established alliance relationships. European NATO members have accelerated defense spending in response to both the Russia threat and concerns about US commitment reliability, but genuine strategic alignment requires more than increased spending — it requires sustained diplomatic investment in maintaining shared understandings and commitments that the current period has put under unusual strain.