NATO on the Brink: When Allies Almost Became Enemies | Greenland, Cod Wars, and More (2026)

Greenland's Future: A Test for NATO's Unity

The recent threats by the Trump administration to take control of Greenland have sparked a heated debate and raised questions about the potential consequences for NATO. This semi-autonomous territory of Denmark, already hosting the Pituffik Space Base, has become a focal point for international tensions. But how close have NATO members come to fighting each other in the past? Let's explore some of the closest instances of potential conflict among allies.

  1. The Cod Wars (1958-1976): A Fishing Dispute with Naval Confrontations

The UK and Iceland's fishing rights dispute escalated into a series of naval confrontations, including the ramming of ships and diplomatic friction. NATO and the US pressured the UK to concede, fearing the loss of the Keflavik airbase in Iceland. This dispute ended in 1976 with a diplomatic win for Iceland, establishing the 200-mile limit as a global standard.

  1. The 1974 Turkish Invasion of Cyprus: A Near-War Scenario

Following a Greek-sponsored coup in Cyprus, Turkey launched a military intervention, nearly sparking a direct conflict between NATO members. Greece withdrew from NATO's military structure in protest, but the alliance prevented a full-scale war, showcasing the importance of collective defense.

  1. The 1995 Turbot War: A Naval Conflict on the Brink

Canada and Spain's fishing dispute escalated into a naval conflict, with Canadian Coast Guard vessels firing warning shots and arresting Spanish crew members. Europe threatened sanctions, but the UK vetoed them, supporting Canada. Spain deployed naval patrols, and Canada authorized its navy to fire on trespassing vessels, bringing NATO members dangerously close to war.

  1. The Suez Crisis (1956): A Secret Alliance and US Opposition

France and the UK formed a secret alliance with Israel to invade Egypt, causing a crisis within NATO. The US opposed the military action, fearing Soviet intervention and Arab alienation. Despite the lack of agreement, France and the UK proceeded, leading to a UN-mediated resolution and the establishment of the United Nations Emergency Force (UNEF).

  1. The Vietnam War (1960s-1970s): Disagreement Over Military Intervention

NATO members had significant disagreements over the US military interventions in Vietnam. While the US viewed Vietnam as a Cold War front, European allies like France and the UK opposed direct involvement. France condemned the war and left NATO's military command in 1966. The UK provided support but opposed sending troops due to public opposition.

  1. The 1999 Kosovo Air Campaign: Greek Reservations

NATO launched an air campaign against Yugoslavia in Kosovo, but Greece, with cultural ties to Serbia, physically blocked and targeted British troops. Greece became the first NATO member to call for a halt to the bombing, highlighting internal divisions.

  1. The 2003 Iraq War: A Deep Rift in NATO

The 2003 Iraq War caused a rift between NATO members. While the alliance supported UNSC Resolution 1441, France, Germany, and Belgium rejected the US claim for immediate military action. The invasion was conducted by a 'Coalition of the Willing,' and Article 5 was not invoked.

  1. The 2011 Libya Intervention: Internal Divisions and Delays

During the 2011 Libya intervention, NATO members failed to agree on command. Germany and Poland opposed military intervention, and Turkiye insisted on avoiding occupation. France opposed leading the intervention, and Italy sought control of airbases. These divisions delayed NATO's formal command by nearly two weeks.

  1. Afghanistan and Eastern Europe Deployments: Ongoing Disagreements

NATO has faced ongoing disagreements over Afghanistan and deployments in Eastern Europe. Some members have limited military operations, and budget disputes and missile defense issues have emerged. However, the alliance has maintained unity, avoiding a breakdown.

Greenland's situation presents a test for NATO's unity, with potential consequences for the alliance's future. The article explores historical instances of close calls, highlighting the importance of collective defense and the challenges of maintaining unity among diverse members.

NATO on the Brink: When Allies Almost Became Enemies | Greenland, Cod Wars, and More (2026)

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