President Donald Trump faced widespread criticism from U.S. lawmakers across party lines following his recent remarks attacking Ukrainian President Volodymyr Zelensky and his administration’s decision to approve an agreement allowing Russia to sell diesel fuel to global markets. The deal, announced last week, permits the import of Russian diesel to the United States until April and has sparked concerns about legal and ethical implications amid the ongoing conflict between Russia and Ukraine.

Senator Thom Tillis (R-North Carolina) expressed serious reservations about the legality of the agreement during an interview on NBC’s "Meet the Press," stating it may contravene existing U.S. law prohibiting oil imports from Russia until Moscow ceases its military aggression against Ukraine and its NATO allies. Tillis was part of a bipartisan group of seven senators who urged Trump to reverse course, warning that the deal effectively provides Russian President Vladimir Putin with financial support to continue the war. Meanwhile, Representative Brian Fitzpatrick (R-Pennsylvania) announced plans to push a bipartisan bill to block the purchase of Russian oil.

Opposition to the deal also came from Senate Minority Leader Chuck Schumer (D-New York), who condemned the administration for what he described as a pact “with the devil” that would bolster Putin’s efforts, particularly given Moscow’s support for Iran targeting American forces in the Middle East. Trump’s critics argue that the import arrangement contradicts the U.S. stance supporting Ukraine’s sovereignty and efforts to disrupt Russia’s energy sector, which Ukraine has targeted in recent strikes damaging Russian infrastructure.

In response to internal and international backlash, European and NATO allies reaffirmed their support for Zelensky and Ukraine during phone calls over the weekend. Leaders from the European Union, France, Britain, Poland, Finland, and Norway emphasized their solidarity with Ukraine in its resistance to Russian aggression. Polish Prime Minister Donald Tusk reaffirmed Europe’s full backing for Zelensky, highlighting unity in confronting Moscow’s military campaign.

Zelensky himself addressed Trump’s calls for his removal from office, stating in an interview with ABC News that the decision rests with the Ukrainian people. He expressed willingness to hold elections should Russia agree to a comprehensive 60-day ceasefire, describing a potential halt in hostilities as beneficial for all parties. However, Ukrainian officials noted that Russian missile strikes continued on energy infrastructure even after reports of an “energy ceasefire” announced by Trump on social media, which Moscow has neither confirmed nor denied.

Kyiv’s presidential office described the news of the diesel deal as unexpected but indicated Kyiv supports measures that could promote peace. At the same time, European officials, including the EU’s foreign policy chief Kaja Kallas, criticized the import arrangement, warning it would generate additional revenue for Russia to fund its military operations.

Observers such as former Swedish Foreign Minister Carl Bildt assessed the deal as largely symbolic, citing the relatively small volume of diesel involved relative to global consumption and suggesting it would have little impact on fuel prices, which Trump has sought to influence amid concerns over high diesel costs ahead of the U.S. midterm elections.

The developments underscore ongoing tensions within U.S. policy and its transatlantic partnerships concerning the war in Ukraine, with questions about how best to balance diplomatic, economic, and military considerations as the conflict enters its second year.