Ukrainian President Volodymyr Zelensky travelled to Brussels for an EU summit, seeking fresh backing as the war enters its fifth winter. His visit coincided with sharp criticism from U.S. President Donald Trump, who described Zelensky as “more difficult to deal with than Putin.” The juxtaposition of diplomatic outreach and political rebuke frames the current tension between Kyiv, Washington and Europe.

EU backing on the agenda

Zelensky was welcomed by European Council President António Costa and European Commission President Ursula von der Leyen. Both leaders stressed that the EU would continue to support Ukraine through the coming winter, emphasizing a “winter package” that includes energy, defence and funding. The summit’s agenda focused on securing resources to keep Ukraine’s energy and water infrastructure functional amid ongoing Russian attacks.

Trump’s criticism and the diesel cease‑fire

During a Newsmax interview, Trump said he was “not a big fan of Zelensky” and claimed the Ukrainian leader was harder to negotiate with than Vladimir Putin. He also called Ukraine’s recent strikes on Russian oil refineries a “disgrace,” arguing they raise global oil prices and jeopardise a U.S.‑Russia diesel import deal that supplies 300,000 tonnes of Russian diesel to the American market. Zelensky had paused attacks on Russian energy targets at Trump’s request, but resumed them after Moscow failed to honour a cease‑fire, according to von der Leyen.

Energy infrastructure under fire

Russia continues to target Ukraine’s energy and water systems, while Ukrainian drones strike Russian refineries and other facilities. Recent attacks left about 270,000 households without power in the Volyn region and caused casualties in Kharkiv. In response, the European Commission called for “increased sanctions” on Russia, and Costa warned that “this is no time to withdraw support.”

Satellite communications controversy

Compounding the energy dispute, the United States placed restrictions on the Starlink satellite network, a critical communications tool for Ukraine’s military. The limitation coincided with deadly Russian strikes, prompting Zelensky to label the U.S. move a “gift to Putin” and an “investment in a war that must be ended, not prolonged.” The Trump administration has warned it could withhold intelligence sharing if Ukraine does not curb attacks on Russian refineries.

Implications for Ukraine’s winter strategy

Zelensky repeatedly stressed the urgency of preparing for winter, describing the forthcoming EU “winter package” as essential for both energy security and defence capabilities. He warned that Russia is attempting to “destroy the energy and water infrastructure,” underscoring the need for sustained Western assistance. The summit’s outcomes will shape Ukraine’s ability to weather the cold season while maintaining its defensive posture.

Analysis

Diplomatic dynamics: The Brussels summit illustrates a clear split between European leaders, who are eager to bolster Ukraine, and the U.S. president, whose recent statements and policy moves suggest a more transactional approach focused on domestic energy prices. This divergence may affect the cohesion of the broader Western alliance.

Strategic leverage: By linking Ukraine’s military actions to U.S. fuel imports, Trump is leveraging economic considerations to influence Kyiv’s operational choices. The Ukrainian leadership, however, appears committed to resuming strikes on Russian energy targets, citing Moscow’s failure to respect the cease‑fire.

Winter preparedness: The EU’s pledge of a “winter package” reflects an acknowledgement that Ukraine’s resilience depends on reliable energy supplies. Continued Russian attacks on infrastructure could undermine these efforts, making the upcoming aid crucial.

Uncertainty

While the EU summit signals strong political support, the exact composition and timing of the promised “winter package” remain unclear. Additionally, the long‑term impact of the U.S. diesel deal on Ukraine’s diplomatic leverage is uncertain, as is the future of U.S. intelligence sharing amid ongoing disputes over satellite communications.

Overall, Zelensky’s appeal for EU backing underscores the importance of allied solidarity as Ukraine confronts both military aggression and shifting international politics. The outcome of the Brussels talks will likely influence the trajectory of Ukraine’s winter strategy and its broader fight against Russian aggression.