(MENAFN) Russia on Wednesday warned that the diplomatic momentum generated from the recent Putin-Trump summit in Alaska has “largely exhausted,” casting fresh doubts over prospects for a peace settlement in Ukraine.

The closed-door meeting, which took place on August 15 in Anchorage and lasted three hours, marked the first in-person dialogue between sitting Russian and American presidents since the Ukraine war erupted in February 2022.

While the initial tone following the summit was cautiously optimistic, divisions over territorial concessions and European-led security guarantees for Ukraine have since stalled any progress toward ending the ongoing conflict.

Former U.S. President Donald Trump, who took a hard line after the summit, labeled Russia a “paper tiger” and has publicly considered transferring long-range Tomahawk cruise missiles to Ukraine—strikes that could reach deep into Russian territory.

“Unfortunately, it must be acknowledged that the powerful impetus of Anchorage in favor of agreements has been largely exhausted by the efforts of opponents and the efforts of supporters of the war to the last Ukrainian among Europeans,” Russian Deputy Foreign Minister Sergey Ryabkov told reporters, according to a state-run news agency.

“This is the result of destructive activity, primarily by Europeans, which we speak about openly and directly,” Ryabkov added.

Speaking on arms control, Ryabkov also noted that Washington has yet to respond to President Vladimir Putin’s offer to voluntarily uphold the core terms of the New START Treaty—set to expire on February 6, 2026—for an additional year.

However, the extension comes with strict conditions. According to Ryabkov, it hinges on the U.S. refraining from actions “that could undermine the existing parity and balance in the area of strategic stability.”

Asked about the proposal on Sunday, Trump appeared to endorse the idea, telling reporters: “Sounds like a good idea to me.”

Despite ongoing behind-the-scenes discussions on potential prisoner swaps, Ryabkov confirmed there has been “no movement” on negotiating peace.

Turning to the question of missile support for Ukraine, Ryabkov issued a warning to Washington: “I hope that those pushing Washington to make this decision are well aware of the depth and gravity of the consequences.”

He stressed that deploying Tomahawk systems would require direct U.S. involvement: “The potential use of Tomahawk missiles can only be possible with the direct involvement of American personnel.”

In a separate development, Ryabkov said Russia will retaliate if new travel restrictions are imposed on Russian diplomats in the European Union.

His remarks came in response to a media report on Tuesday, which revealed that EU countries have agreed to curtail the movement of Russian diplomats, following what intelligence agencies have described as a rise in sabotage attempts by operatives using diplomatic cover.

The proposed measure, spearheaded by the Czech Republic, would require Russian embassy staff to notify host governments in advance of any travel plans within the bloc.

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