Kimberly Ann Guilfoyle presented her credentials as United States Ambassador to Greece to Hellenic Republic President Constantine Tassoulas at the Presidential Palace in Athens on November 4, 2025, a ceremony that coincided with high-level discussions in Athens about expanding Western liquefied natural gas exports to eastern Europe and Ukraine. U.S. officials and Greek counterparts have been pursuing the use of Greek port facilities to increase LNG shipments eastward, and talks in the Greek capital have been linked to plans to route additional Western gas supplies to war‑torn Ukraine via a modified multinational pipeline network.
The credentialing ceremony took place against a backdrop of intensified energy and security diplomacy. U.S. interest in routing more LNG through Greece reflects broader Western efforts to diversify supply lines for eastern Europe and to find ways to augment energy flows to Ukraine while land-based infrastructure in the region remains disrupted. Greek ports are being discussed as strategic transit points in those calculations, according to participants in the Athens meetings.
Over the weekend, Guilfoyle took part in a black‑tie welcome reception that brought together U.S. diplomats, local business leaders and members of the Greek Cabinet. Attendees described a festive moment in which the ambassador joined others in a lively Greek dance, at which she pledged,
The event underscored an emphasis on public diplomacy and engagement with Greek economic and political networks as energy and security talks continue.
Guilfoyle is scheduled to meet Greek Prime Minister Kyriakos Mitsotakis and to attend ministerial meetings organized by the Washington‑based Atlantic Council. Those gatherings are proceeding as part of a broader agenda in Athens that includes officials and delegations focused on energy transit, security cooperation and economic ties. Chris Wright and Doug Burgum are also expected in Athens this week, according to officials involved in scheduling, adding to the roster of U.S. and allied figures converging on the city for related consultations.
U.S.-Greece relations have included an expanding security dimension in recent years. Since 2018, bilateral military cooperation has increased U.S. access to Greek bases and broadened the role of American defense contractors in Greece's multibillion‑dollar armed forces modernization program. The defense partnership, which has featured infrastructure and logistics arrangements, has been part of the deepening ties between the two countries and figures into discussions about regional stability as energy and security issues overlap.
Athens will host several days of meetings and diplomatic engagements aimed at aligning strategic, commercial and defense priorities. Officials involved in the talks have linked the energy planning to efforts to maintain supply security for eastern Europe and to explore routes that could channel Western gas to Ukraine amid ongoing disruptions to regional pipelines. The coming sessions with the prime minister and the Atlantic Council‑organized ministerial meetings are expected to clarify how Greek facilities and international cooperation might be employed in those plans.
The presentation of credentials formalized Guilfoyle's role in Athens at a moment when energy routing, defense cooperation and high‑level visits converge. Her upcoming meetings with Greek leadership and participation in Atlantic Council events will likely shape the next steps in negotiations over LNG transit through Greece and the feasibility of modifying multinational pipeline networks to support increased Western gas exports to Ukraine.