KYIV, Ukraine (AP) — Ukraine on Monday marked the bleakest anniversary yet of its war against the Russia invasion, with the country's forces under severe pressure on the battlefield and the Trump administration apparently embracing the Kremlin in a reversal of U.S. policy.

The three-year milestone drew more than a dozen Western leaders to Kyiv for commemorative events in a conspicuous show of support. They warned of the war’s wider implications for global security and vowed to keep providing billions of dollars in support for Ukraine as uncertainty deepens over the U.S. commitment to help. Washington did not send any senior official to the occasion.

The fourth year of fighting could be pivotal as Trump uses his return to office to press for a peace deal.

World security is at stake in talks over how the war ends, European Commission President Ursula von der Leyen warned.

“The autocrats around the world are watching very carefully whether there’s any impunity if you violate international borders or invade your neighbor, or if there is true deterrence,” she said.

Canadian Prime Minister Justin Trudeau echoed that sentiment. Canadians, he said, “believe deeply that it’s not just about Ukraine. It’s about the rules and the values and the principles of sovereignty, of independence, territorial integrity that protects every country in the world. All of us rely on those rules to be able to build peace and security."

Some observers say Russian success in Ukraine could embolden China's ambitions. Just as Moscow claims that Ukraine is rightfully Russian territory, China claims the self-governing island of Taiwan as its own. North Korea and Iran have also aided Russia's war effort.

In a cascade of unwelcome developments for Kyiv, Trump has in recent days called Ukrainian President Volodymyr Zelenskyy a dictator, suggested Ukraine is to blame for the war and ended Putin's three-year diplomatic isolation by the United States. U.S. officials have also indicated to Ukraine that its hopes of joining NATO are unlikely to be realized and that it probably won't get back the land that Russia's army occupies, which amounts to nearly 20% of the country.

Meanwhile, Putin’s troops are making steady progress on the battlefield while Ukraine is grappling with shortages of troops and weapons.

The guests in Kyiv and the leaders appearing by video had similar messages: Ukraine and its European partners must be consulted in any peace negotiations, Putin’s ambitions must be thwarted, and Europe must take on more of the burden for its own defense.

Alarm bells sound in Europe as Washington changes course

The shift in Washington's policy has set off alarm bells in Europe, where governments fear being sidelined by the U.S. in efforts to secure a peace deal. They are mulling how they might pick up the slack of any cut in U.S. aid for Ukraine. The changes have also placed strain on transatlantic relations.

European Council President Antonio Costa on Sunday announced that he would convene an emergency summit of the 27 EU leaders in Brussels on March 6, with Ukraine at the top of the agenda.

British Prime Minister Keir Starmer and French President Emmanuel Macron are both visiting Washington this week.

EU foreign ministers on Monday approved a new raft of sanctions against Russia. The measures target Russia’s so-called “shadow fleet” of ships that it uses to skirt restrictions on transporting oil and gas, or to carry stolen Ukrainian grain. The EU said 74 vessels were added to its shadow fleet list.

Asset freezes and travel bans were imposed on 83 officials and “entities” — usually government agencies, banks or companies.

Britain, too, imposed new sanctions, targeting 107 businesses and individuals in what it says is its biggest package targeting Russia’s war machine since the early days of the conflict in 2022.

The measures take aim at Russia’s military supply chains, including companies in several countries — notably China — that Britain says are supplying machine tools, electronics and dual-use goods for Russia’s military.

Spanish Prime Minister Pedro Sánchez said his country would provide a 1 billion-euro ($1.04 billion) military systems package to Ukraine this year.

Starmer said Ukrainians’ voices “must be at the heart of the drive for peace,” while Trump’s intervention had “changed the global conversation” and “created an opportunity.”

“Russia does not hold all the cards in this war," he said.

Coming off a victory in Sunday's German elections, conservative leader Friedrich Merz — also a staunch backer of Ukraine — posted on X Monday: "More than ever, we must put Ukraine in a position of strength."

“For a fair peace, the country that is under attack must be part of peace negotiations,” he wrote.

Diplomacy ramps up after record Russian drone attack

On Sunday, Russia launched its biggest single drone attack of the war, pounding Ukraine with 267 drones.

The EU’s top diplomat, Kaja Kallas, insisted that the U.S. cannot seal any peace deal to end the war without Ukraine or Europe being involved. She highlighted what she claimed were pro-Russian positions being taken up by the Trump administration.

“You can discuss whatever you want with Putin. But if it comes to Europe or Ukraine, then Ukraine and Europe also have to agree to this deal,” Kallas told reporters in Brussels, where she was leading a meeting of EU foreign ministers.

Kallas is scheduled to travel to Washington on Tuesday for talks with U.S. Secretary of State Marco Rubio.

U.N. Secretary-General António Guterres said the third anniversary was “a grim milestone.”

“More than 12,600 civilians killed, with many more injured. Entire communities reduced to rubble. Hospitals and schools destroyed,” he said in Geneva.

Washington and Moscow draw closer

Russia's foreign ministry said Saturday that preparations for a face-to-face meeting between Trump and Putin were underway, and U.S. officials have said that they agreed with Moscow to reestablish diplomatic ties and restart economic cooperation.

At a virtual meeting with leaders of the Group of Seven economies also held Monday, Zelenskyy said Ukraine and the U.S. are "working productively" on an economic agreement that would help lock them together. Trump attended the meeting.

“And, President Trump, we would really like to hear from you because all our people, all our families, are very worried. Will there be support from America? Will America be the leader of the free world?” Zelenskyy said.

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Associated Press writers Lorne Cook in Brussels and Geir Moulson in Berlin contributed to this report.

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Follow AP's coverage of the war in Ukraine at https://apnews.com/hub/russia-ukraine

In this photo provided by the Ukrainian Presidential Press Office, European leaders attending the ceremony at the memorial to the fallen Ukrainian soldiers on Independence Square in Kyiv, Ukraine, Monday, Feb. 24, 2025. (Ukrainian Presidential Press Office via AP)

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In this photo provided by the Ukrainian Presidential Press Office, European leaders attending the ceremony at the memorial to the fallen Ukrainian soldiers on Independence Square in Kyiv, Ukraine, Monday, Feb. 24, 2025. (Ukrainian Presidential Press Office via AP)

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Ukrainian President Volodymyr Zelenskyy and First Lady Olena Zelenska during a ceremony in Maidian Square to commemorate the third anniversary of the Russian invasion of Ukraine, in Kyiv, Monday, Feb. 24, 2025. (Javad Parsa/NTB via AP)

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European Commission President Ursula von der Leyen and European Council President Antonio Costa arrive at a train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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European Union foreign policy chief Kaja Kallas speaks during a media conference after a meeting of EU foreign ministers in Brussels, Monday, Feb. 24, 2025. (AP Photo/Virginia Mayo)

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In this photo provided by the Ukrainian Presidential Press Office, Canada's Prime Minister Justin Trudeau attends the Support Ukraine summit in Kyiv, Ukraine, Monday, Feb. 24, 2025. (Ukrainian Presidential Press Office via AP)

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In this photo provided by the Ukrainian Presidential Press Office, Germany's President Frank-Walter Steinmeier delivering a video message to the participants of the Support Ukraine summit in Kyiv, Ukraine, Monday, Feb. 24, 2025. (Ukrainian Presidential Press Office via AP)

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European Union foreign policy chief Kaja Kallas speaks during a media conference after a meeting of EU foreign ministers in Brussels, Monday, Feb. 24, 2025. (AP Photo/Virginia Mayo)

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Andriy Yermak, the head of Ukraine's Presidential Office, center, talks with European Council President Antonio Costa at a train station in Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Canada's Prime Minister Justin Trudeau arrives at a train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Ukraine's Foreign Minister Andriiy Sybiha, center, greets Denmark's Prime Minister Mette Frederiksen at a train station in Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Sweden's Prime Minister Ulf Kristersson, center, arrives at a train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Lithuanian President Gitanas Nauseda, left, arrives at train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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A woman sits in front of a grave of her relative during memorial service for fallen Ukrainian soldiers in Bucha, Ukraine, Feb. 24, 2025. (AP Photo/Evgeniy Maloletka)

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Spain's Prime Minister Pedro Sanchez arrives at a train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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European Union foreign policy chief Kaja Kallas speaks with the media as she arrives for a meeting of EU foreign ministers at the European Council building in Brussels, Monday, Feb. 24, 2025. (AP Photo/Virginia Mayo)

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European Commission President Ursula von der Leyen, center, arrives at a train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Denmark's Prime Minister Mette Frederiksen arrives in Ukraine's capital Kyiv on the third anniversary of the Russian invasion of Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Norway's Prime Minister Jonas Gahr Store arrives in Ukraine's capital Kyiv on the third anniversary of the Russian invasion of Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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Sweden's Prime Minister Ulf Kristersson, center, arrives at a train station on the third anniversary of the Russian invasion of Ukraine, Kyiv, Ukraine, Monday, Feb. 24, 2025. (AP Photo/Efrem Lukatsky)

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European Union and Ukrainian flags flap in the wind on the day to mark the third anniversary of Russia's full-scale invasion of Ukraine, at EU headquarters in Brussels, Monday, Feb. 24, 2025. (AP Photo/Virginia Mayo)

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