British Prime Minister Keir Starmer is expected to welcome Ukrainian President Volodymyr Zelenskyy in London Thursday morning, the latest meeting between the Ukrainian leader and the head of a European country as the continent braces for a critical U.S.-Russia summit in Alaska on Friday.

Zelenskyy’s trip to the British capital comes a day after he took part in virtual meetings from Berlin with U.S. President Donald Trump and the leaders of several European countries. Those leaders said Trump had assured them he would make a priority of trying to achieve a ceasefire in Ukraine when he meets with Russian President Vladimir Putin on Friday in Anchorage.

Both Zelenskyy and the Europeans have worried the bilateral U.S.-Russia summit would leave them and their interests sidelined, and that any conclusions reached could favor Moscow and leave Ukraine and Europe’s future security in jeopardy with Russia’s full-scale invasion of Ukraine now in its fourth year.

Yet some of those leaders, like German Chancellor Friedrich Merz and French President Emmanuel Macron, praised Wednesday’s video conference with Trump as constructive. Speaking after the meetings to reporters, Trump warned of “very severe consequences” for Russia if Putin does not agree to stop the war against Ukraine after their Friday meeting.

Territorial integrity

Starmer on Wednesday said the Alaska summit would be “hugely important,” and could be a “viable” path to a ceasefire in Ukraine. But he also alluded to European concerns that Trump may strike a deal that forces Ukraine to cede territory to Russia, and warned that Western allies must be prepared to step up pressure on Russia if necessary.

During a call Wednesday among leaders of countries involved in the “coalition of the willing” — those who are prepared to help police any future peace agreement between Moscow and Kyiv — Starmer stressed that any deal reached on bringing the fighting to an end must protect the “territorial integrity” of Ukraine.

“International borders cannot be, and must not be changed by force, and again that’s a long-standing principle of this group,’’ he said. “And alongside that, any talk about borders, diplomacy, ceasefire has to sit alongside a robust and credible security guarantee to ensure that any peace, if there is peace, is lasting peace and Ukraine can defend its territorial integrity as part of any deal.”

Some Ukrainians skeptical

With another high-level meeting on their country’s future on the horizon, some Ukrainians expressed skepticism that any breakthroughs would be achieved during Friday’s U.S.-Russia summit.

Oleksandra Kozlova, 39, a department head at a digital agency in Kyiv, told The Associated Press on Wednesday that she believes Ukrainians “have already lost hope” that meaningful progress can be made on ending the 3 1/2-year-old war.

“I don’t think this round will be decisive,” she said. “There have already been enough meetings and negotiations promising us, ordinary people, that something will be resolved, that things will get better, that the war will end. Unfortunately, this has not happened, so personally I don’t see any changes coming.”

Anton Vyshniak, a car salesman in Kyiv, said Ukraine’s priority now should be saving the lives of its military servicepeople, even at the expense of making territorial concessions.

“At the moment, the most important thing is to preserve the lives of male and female military personnel. After all, there are not many human resources left,” he said. “Borders are borders, but human lives are priceless. Therefore, some principles can be disregarded here.”

Russia and Ukraine trade strikes

Russian strikes in Ukraine’s Sumy region overnight Wednesday resulted in numerous injuries, Ukrainian regional officials said. A missile strike on a village in the Seredyna-Budska community injured a 7-year-old girl and a 27-year-old man, according to regional governor Oleh Hryhorov. The girl was hospitalized in stable condition.

In the southern Kherson region, Russian artillery fire struck the village of Molodizhne on Thursday morning, injuring a 16-year-old boy, regional governor Oleksandr Prokudin said. The teenager suffered an explosive injury, shrapnel wounds to his arms and legs and an acute stress reaction. He was hospitalized in moderate condition, Prokudin said.

In Russia, an oil refinery in the Volgograd region caught fire after a Ukrainian drone attack overnight, according to local governor Andrei Bocharov. The refinery, one of the biggest producers of petroleum products in southern Russia, has been a frequent target of drone attacks, according to Russian independent news site Meduza.

Overall, Russia’s Defense Ministry reported destroying 44 Ukrainian drones over Russian regions and the annexed Crimea overnight.

In Belgorod, the biggest city in the namesake region on the border with Ukraine, three civilians were injured in a Ukrainian drone attack, Gov. Vyacheslav Gladkov said, adding that a government building was hit by the attack.

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