Russia said on Wednesday attempts to resolve security issues relating to Ukraine without Moscow's participation were a "road to nowhere," sounding a warning to the West as it scrambles to work out guarantees for Kyiv's future protection.

Foreign Minister Sergei Lavrov particularly criticised the role of European leaders who met US President Donald Trump and Ukrainian President Volodymyr Zelensky at the White House on Monday to discuss security guarantees for Ukraine that could help end the three-and-a-half-year-old war.

"We cannot agree with the fact that now it is proposed to resolve questions of security, collective security, without the Russian Federation. This will not work," Lavrov told a joint press conference after meeting Jordan's foreign minister.

US and European military planners have begun exploring post-conflict security guarantees for Ukraine, US officials and sources told Reuters on Tuesday. Lavrov said such discussions without Russia were pointless.

"I am sure that in the West and above all in the United States they understand perfectly well that seriously discussing security issues without the Russian Federation is a utopia, it's a road to nowhere," he said.

Lavrov also accused the European leaders who met Trump and Zelensky of carrying out "a fairly aggressive escalation of the situation, rather clumsy and, in general, unethical attempts to change the position of the Trump administration and the president of the United States personally... We did not hear any constructive ideas from the Europeans there."

Trump said on Monday the United States would help guarantee Ukraine's security in any deal to end Russia's war there. He subsequently said he had ruled out putting US troops in Ukraine, but the US might provide air support as part of a deal to end the hostilities.

Meanwhile, Nato military chiefs held a virtual summit on security guarantees for Ukraine.

"On #Ukraine, we confirmed our support. Priority continues to be a just, credible and durable peace," the chair of the alliance's military committee, Admiral Giuseppe Cavo Dragone, wrote on X after the meeting.

This came as Polish officials said that an object that crashed in a cornfield in eastern Poland overnight was likely a Russian drone.

Poland accused Russia of provoking Nato countries just as efforts to find an end to the war were intensifying.

"Once again, we are dealing with a provocation by the Russian Federation, with a Russian drone. We are dealing in a crucial moment, when discussions about peace (in Ukraine) are under way," Defence Minister Wladyslaw Kosiniak-Kamysz said. (Reuters)