US Secretary of State Marco Rubio to visit Iceland, Greece, and Portugal for security talks

Arctic security and diplomacy in Reykjavik

US Secretary of State Marco Rubio will begin a European diplomatic tour from 5 October to 8 October 2026, visiting Iceland, Greece, and Portugal. The opening leg in Reykjavik represents the first visit by a US Secretary of State to Iceland since 2021. Rubio will meet Icelandic officials to discuss economic and security collaboration following shifts in northern regional security. Iceland operates without a standing military force and continues to depend primarily on the United States and NATO to guarantee its national defense.

The visit follows a Greenland security accord signed in New York, which concluded disputes with the European Union by planning two new American military bases on the autonomous Danish territory after earlier annexation threats from President Donald Trump. Arctic tensions also followed an incident in early September 2026, when Trump displayed a map overlaying the American flag across North America, Mexico, the Caribbean, Greenland, and Iceland. Icelandic officials summoned the US ambassador to Reykjavik to state that the graphic was inappropriate. Furthermore, Icelandic voters rejected a proposal to resume European Union accession talks, which have been frozen since 2013, in an August 2026 referendum.

Strategic dialogue in Athens

Rubio will travel next to Athens to lead the American delegation at the sixth session of the US-Greece Strategic Dialogue. The bilateral forum serves as a high-level diplomatic framework aimed at expanding cooperation in defense, energy, and regional security in the Eastern Mediterranean.

In Greece, Secretary Rubio will lead the United States delegation to the Sixth US-Greece Strategic Dialogue, deepening our partnership on key Administration priorities, including defense cooperation and regional and energy security.

The Greek meetings follow diplomatic friction involving US Ambassador to Greece Kimberly Guilfoyle. Reports indicated that Guilfoyle referenced American influence regarding Greek political stability during diplomatic travels through Balkan capitals, including Bucharest, Sofia, Belgrade, and Skopje. Her remarks regarding domestic political conditions in nations such as Romania generated friction across regional diplomatic channels immediately prior to the strategic dialogue.

Defense and bilateral cooperation in Lisbon

For the final leg of the itinerary, Rubio will travel to Lisbon for talks with Portuguese officials to advance defense, economic, and technological cooperation. The Portuguese Ministry of Foreign Affairs confirmed that Rubio has meetings scheduled with Prime Minister Luís Montenegro and Foreign Minister Paulo Rangel. The tour follows earlier European stops by Rubio in Germany, France, and Italy.

The Lisbon discussions take place following repeated demands from the Trump administration for European NATO members to expand defense spending, which coincided with Washington halting bilateral assistance for Ukraine. Washington also faced resistance from European allies regarding the military campaign against Iran, which the United States and Israel launched on 28 February 2026, causing global fuel price increases. In May 2026, Rubio commended Portugal as an exemplary NATO ally for permitting American access to Lajes Field in the Azores. Foreign Minister Rangel reiterated that base utilization must remain a proportionate response to attacks, adding that any revision of the Lajes agreement will occur only after Middle East hostilities conclude.