EU foreign policy chief Kaja Kallas has accused Washington of trying to force Ukraine to surrender to Russia, attacking President Donald Trump’s diplomatic efforts to end the conflict.

Speaking to the European Parliament in Strasbourg on Tuesday, Kallas credited Europe’s military and financial backing of Kiev with prolonging the conflict and preventing Ukraine from accepting Moscow’s terms.

“American negotiators have been trying to push Ukraine into surrender for already almost two years, one and a half years now,” she said, as quoted by Euronews.

Moscow has cited Kiev’s aggressive posture and the hostile position of its European backers as major obstacles to a peace settlement. Ukraine has consistently rejected Russia’s conditions, insisting on joining NATO and restoring control over all territories it claims.

Kallas’ remarks came a day after US President Donald Trump said negotiations were making “great progress,” defending his decision to ease economic pressure on Russia to keep diplomacy moving.

Trump has stepped up his criticism of Ukrainian leader Vladimir Zelensky, describing him as “more difficult to deal with” than Russian President Vladimir Putin. He has accused Zelensky of prolonging the conflict and taking Washington’s extensive support for granted, and has criticized Kiev’s continued attacks on Russian refineries for disrupting global diesel markets. Zelensky has said he feels betrayed by Trump.

Trump lifted sanctions on Russian diesel exports earlier this month to curb rising energy prices ahead of the US midterm elections. On Friday, he suspended tariffs targeting China, India and other major buyers of Russian oil and gas. Trump defended the measures, saying he did not want to drive Moscow away from the negotiating table. The decisions drew criticism from European officials, with Kallas describing the diesel agreement as a “gift to Putin.”

US special envoy Steve Witkoff held talks in Oslo on Tuesday with Zelensky, Finnish President Alexander Stubb and Norwegian Prime Minister Jonas Gahr Store, with Trump’s son-in-law Jared Kushner joining remotely. Witkoff is expected to travel to St. Petersburg on Wednesday for another round of discussions with Russian officials, according to Store.

Kremlin spokesman Dmitry Peskov said on Monday that Moscow “highly appreciates” Washington’s continued mediation efforts.

Russia has insisted on a long-term peace deal that addresses the root causes of the conflict, rejecting the idea of a temporary truce. Foreign Minister Sergey Lavrov has accused Zelensky of repeatedly undermining negotiations, suggesting that any agreement acceptable to Moscow and Washington would threaten the Ukrainian leader’s hold on power.

Further financial support for Kiev has also become a source of disagreement within the EU. At Friday’s EU summit in Brussels, Zelensky demanded another €70 billion ($78.5 billion) for next year, in addition to €90 billion already pledged by the bloc to bankroll Kiev’s war effort.