President Volodymyr Zelensky asserted Ukraine's right to defend itself, pushing back against scathing criticism from former U.S. President Donald Trump, who labeled Kyiv's recent strikes on Russian oil refineries a "disgrace." Trump, who had previously brokered a deal for diesel imports from Moscow, also suggested that Zelensky was more challenging to negotiate with than Russian President Vladimir Putin.

Speaking at an EU summit in Brussels, Zelensky expressed his inability to accept the diesel deal, fearing it could set a precedent for future energy agreements. "If I don't stand up to this... who else will?" he questioned, emphasizing his commitment to Ukraine's national interests. This exchange highlights escalating tensions between Washington and Kyiv, fueled by disagreements over the diesel deal and restrictions placed on Ukraine's battlefield satellite network.

Zelensky's visit to Brussels followed a trip to London, marking the end of a difficult week. Upon his arrival at the summit on Friday, where European Union leaders offered their support, he remarked on the comfort of being among "real leaders," a statement perceived by some as a subtle jab at the U.S. president.

The summit's agenda was dominated by discussions on financial aid for Ukraine and strategies to help the nation navigate its fifth winter since Russia's full-scale invasion in 2022. Zelensky informed the European Council that the war is projected to cost €155 billion next year, with the EU expected to contribute at least €70 billion for defense and weaponry.

Ukraine faces a critical shortage of U.S.-made Patriot missiles, essential for defending its cities, a problem Zelensky described as chronic and difficult to resolve. He noted that while Ukraine could significantly increase drone production, a lack of funding prevents it. Zelensky expressed belief that Europe possesses the necessary interceptors for the winter but criticized their procurement as piecemeal.

Addressing the strained relationship with the U.S., Zelensky acknowledged the presence of many Americans who support Ukraine as allies, aiming to unite rather than divide. Trump's strong disapproval of Ukraine's renewed attacks on Russian oil refineries stems from concerns that such actions could jeopardize Moscow's commitment to the diesel deal, which involves supplying 300,000 tonnes of diesel to global markets.

Following a period of mutual attacks on energy infrastructure by both Russia and Ukraine, Trump had unexpectedly called for a ceasefire on these facilities. Kyiv had indicated it would cease strikes if Russia reciprocated, but Moscow denied agreeing to any such deal and continued its assaults, prompting Ukraine to resume its attacks after a three-day pause.

Trump's remarks, made during an interview, underscore the deepening rift between the United States and Ukraine, signaling potential shifts in geopolitical alliances and support for Kyiv amidst the ongoing conflict.