Iceland votes on EU talks as Trump's Greenland threats rattle Nordic security

Icelanders go to the polls on 29 August for a referendum that would have seemed improbable a decade ago: whether to restart negotiations to join the European Union. The island nation of 380,000 people abandoned accession talks in 2013 after a change of government, convinced that its membership of the European Economic Area and a bilateral defence agreement with the United States provided all the integration it needed. That calculation has shifted. Russia's full-scale invasion of Ukraine in 2022 drove Finland and Sweden into NATO. Now the unpredictable foreign policy of Donald Trump's second administration, particularly his territorial demands on Greenland and a tariff war against Europe, is pushing Iceland toward the EU as a strategic hedge.

A geography that straddles two continents

Iceland's geopolitical position is unique. The country sits astride the Mid-Atlantic Ridge, literally straddling the continental divide between Europe and North America. That geography has shaped its security architecture since 1949: Iceland was a founding member of NATO but has never maintained armed forces of its own. Instead it relies on the alliance and, primarily, on the United States under a Bilateral Defence Agreement that dates back to 1951. At the same time, Iceland is deeply integrated with Europe. It joined the European Economic Area in 1994, giving it access to the single market without a seat at the table where its rules are written. The EU is Iceland's largest trading partner by a wide margin, accounting for the bulk of its goods and services exports.

This dual anchorage served Iceland well for decades. The EEA provided economic integration; the US guarantee provided hard security. The arrangement began to fracture after 2022. Russia's invasion of Ukraine demonstrated that European security could not be taken for granted. Finland and Sweden, both long-standing military non-aligned states, applied for NATO membership within months. Their leaders were explicit about the motive. Tobias Billström, Sweden's foreign minister, said in March 2024: "While I myself have been advocating for Swedish NATO membership for many years, it was Russia's full-scale invasion on Ukraine that brought Sweden, and Finland, into the alliance." Sauli Niinistö, then Finland's president, put it more bluntly when asked about Russian retaliation: "You caused this. Look at yourself in the mirror."

The Trump factor reshapes the calculus

If Russia's aggression pulled Nordic states toward NATO, Trump's behaviour is pulling Iceland toward the EU. The US president's aggressive use of tariffs against European allies contravenes Article 2 of the North Atlantic Treaty, which commits members to "eliminate conflict in their international economic policies" and encourage economic collaboration. More alarming for Reykjavik has been Trump's renewed campaign to acquire Greenland, an autonomous territory within the Kingdom of Denmark. What appeared as a diplomatic eccentricity during his first term has escalated into a sustained pressure campaign. At one point during the height of the crisis, Denmark flew blood bags and explosives to Greenland in preparation for a possible US military operation. NATO scrambled to defuse the situation, establishing an Arctic security mission called Arctic Sentry. The Danish prime minister has said the issue remains unresolved; Trump reiterated his intention to take Greenland "by hook or by crook" only recently.

The Greenland crisis resonates in Reykjavik because Trump appeared to confuse the two islands in a speech at Davos earlier this year. Kristrún Frostadóttir, Iceland's prime minister, acknowledged the anxiety in a July interview: "Obviously, all of this Greenland matter concerns people, right? It's a huge problem. The fact that we have leaders in the free world talking like this is an issue. It's a massive issue, and I know Icelanders are very concerned about it." The concern is not merely rhetorical. A small state with no military of its own, dependent on the US for defence, cannot easily dismiss territorial threats from its principal security guarantor against a neighbour that shares its strategic waters.

Why the first attempt at accession failed

Iceland applied for EU membership in July 2009, weeks after the financial crisis collapsed its banking sector and destroyed the króna. The crisis exposed the vulnerability of a small, open economy with its own currency but no fiscal backstop. Accession talks opened in 2010 and progressed through 27 of 35 negotiating chapters before a new centre-right government halted them in 2013, arguing that the EEA was sufficient and that fisheries sovereignty, the perennial Icelandic red line, could not be guaranteed. A planned referendum on whether to continue talks was cancelled. The decision reflected a consensus that the economic emergency had passed and that the political cost of surrendering control over fishing quotas outweighed the benefits of a seat at the Council table.

That consensus has eroded. The fisheries obstacle remains real: Iceland's exclusive economic zone is among the richest in the North Atlantic, and any accession treaty would require transitional arrangements that satisfy both Brussels and the Icelandic fleet. But the strategic context has changed in ways that make the 2013 calculation look complacent. The transatlantic alliance is no longer the reliable constant it appeared to be. The 2025 US National Security Strategy explicitly pledged to "cultivate resistance to Europe's current trajectory within European nations," a formulation that reads like a declaration of political warfare against the EU. Vice President JD Vance's appearance at the Munich Security Conference that year, where he shunned German officials to meet the far-right Alternative für Deutschland, signalled a willingness to interfere in European domestic politics that allies have not experienced from Washington since the Cold War.

Article 5 credibility and the Greenland precedent

The Greenland crisis exposes a structural problem for NATO. Article 4 provides for consultations when a member's territorial integrity or security is threatened. But the mechanism assumes the threat comes from outside the alliance. When the aggressor is the alliance's most powerful member, Article 4 is paralysed. Denmark cannot invoke consultations against the United States. The Danes have been left to rely on quiet diplomacy and the good offices of other allies to manage a crisis that should not exist. For Iceland, which has no military and no territorial depth, the lesson is stark: the US security guarantee is only as reliable as the president who controls it. If Washington can threaten a NATO ally's territory with impunity, the credibility of Article 5, the collective defence clause, is implicitly weakened. A Russian attack on a NATO member is now widely assessed as a realistic possibility. The alliance's deterrence depends on the certainty that an attack on one will be met by all. That certainty has been damaged.

The EU offers a different kind of security: not a nuclear umbrella, but a legal and economic framework that binds members together through mutual interest and enforceable law. For a small state, the single market's regulatory gravity provides leverage that bilateral deals cannot. Iceland already applies most EU legislation through the EEA without voting rights. Membership would give it a voice in shaping the rules that govern its economy. It would also place Iceland inside a union that has demonstrated a capacity for collective action, sanctions against Russia, joint procurement of vaccines, the Recovery and Resilience Facility, that NATO, as a purely military alliance, cannot replicate.

The Norwegian domino

The referendum's consequences could extend beyond Iceland. Norway has twice rejected EU membership, in 1972 and 1994, but the political landscape is shifting. The Conservative opposition leader has recently called for a new attempt. Jonas Gahr Støre, Norway's prime minister, has said Norwegians should "pay close attention" to Iceland's vote, noting that if Iceland joins, "it would leave Norway and the small principality of Liechtenstein the only non-EU members of the European Economic Area." That isolation would be politically uncomfortable for Oslo. Norway already implements most EU law through the EEA and contributes substantially to EU cohesion funds. The argument for formal membership, a seat at the table, becomes harder to resist when the only other EEA outsiders are a microstate and a country that has just chosen to join.

A successful Icelandic accession could also demonstrate that the EU is capable of flexibility. The negotiations that produced the UK's withdrawal agreement were marked by rigidity on both sides. If the EU can accommodate Iceland's fisheries needs and Norway's oil and gas interests, both legitimate sovereign concerns, it would signal a more pragmatic union than the one that negotiated Brexit. That, in turn, could make the prospect of UK re-entry less fanciful over the longer term. The dominoes are speculative, but the logic is coherent: each accession that resolves difficult sectoral issues builds a template for the next.

What the polls suggest, and what they don't

Reliable polling on the referendum is scarce. Icelandic pollsters have not published regular tracking surveys, and the question's phrasing, whether to "restart talks" rather than "join the EU", makes comparisons difficult. Support for EU membership has historically hovered around 30-40 per cent, with a spike during the financial crisis. The current government, a coalition led by Frostadóttir's Social Democratic Alliance, supports restarting talks. The opposition is divided: the Independence Party opposes, the Left-Green Movement is sceptical, and the Progressive Party, traditionally the voice of the fishing industry, has not declared a clear position. The fisheries lobby, which killed the last attempt, will campaign hard against. But the geopolitical argument is new, and it cuts across traditional left-right lines.

The government has been careful not to frame the referendum as a vote on Trump. Frostadóttir has emphasised economic arguments: the need for a voice in single market rules, access to EU funding programmes, currency stability. But the geopolitical subtext is unmistakable. In a July speech, she noted that "the world has changed since 2013" and that "small states must seek shelter where they can find it." The shelter metaphor is a staple of Icelandic international relations scholarship. For decades the shelter was the US. Now, for the first time since 1949, Icelandic leaders are openly questioning whether that shelter is still sturdy.

The fisheries trap has not disappeared

None of this makes accession easy. Fisheries remain the hardest nut. The EU's Common Fisheries Policy treats fish stocks as a shared resource; Iceland treats them as a sovereign asset. The 2013 breakdown occurred because Reykjavik concluded that the transition periods on offer would not protect its quota system. Since then, the EU has shown some flexibility with Norway and the Faroe Islands on bilateral fisheries arrangements, but those are third-country agreements, not membership terms. Any Icelandic accession treaty would require a protocol on fisheries that satisfies the European Parliament, the Council, and the Icelandic fleet simultaneously. That is a diplomatic feat of a high order.

Agriculture is a secondary but real obstacle. Iceland's sheep and dairy sectors are protected by high tariffs. The EU would demand liberalisation; Icelandic farmers would demand compensation. The sums are small in EU budget terms but politically potent in Reykjavik. Then there is the question of the króna. Iceland retains its own currency, which floated freely after the 2008 crash. EU membership does not require immediate euro adoption, Sweden and Denmark have opt-outs, but it commits a member to join once convergence criteria are met. For a country that values monetary autonomy as a shock absorber, that commitment is politically sensitive.

A vote on more than membership

The referendum on 29 August is formally a decision on whether to reopen negotiations. It is not a vote on membership itself, that would come later, after a treaty is negotiated and put to a second referendum. But in practice, a 'no' vote would settle the question for a generation. A 'yes' vote would commit Iceland to a process that could take years, with no guarantee of success. The last enlargement, Croatia's in 2013, took a decade from application to accession. The EU is currently focused on the Western Balkans, Ukraine, Moldova and Georgia. Iceland would be a candidate of a different order: a wealthy, rule-of-law-compliant, single-market-integrated state that could technically join quickly if the political will existed on both sides.

The political will in Brussels is the unknown variable. The European Commission has signalled openness. Enlargement Commissioner Marta Kos said in June that "Iceland's application would be assessed on its merits" and that "the EU has a strategic interest in a stable, integrated North Atlantic." But the Council, where member states decide, may be less enthusiastic. France has historically resisted enlargement that dilutes the Common Fisheries Policy. Spain shares that concern. Eastern member states prioritise Ukraine and the Balkans. Iceland's advocates will need to build a coalition that frames the island's accession as a geopolitical necessity, not merely a technical exercise.