Sir Keir Starmer has described Ukraine's endorsement of American ceasefire proposals as a "remarkable breakthrough".

The comments came as the Defence Secretary headed to Paris for discussions aimed at enhancing European peacekeeping initiatives amid the ongoing conflict in Ukraine.

In a coordinated effort, the Prime Minister has joined the United States in urging Russian President Vladimir Putin to accept a proposed 30-day ceasefire, initiated by the Trump administration.

The Prime Minister stated that "the ball is now in the Russian court" regarding the acceptance of the ceasefire.

In a significant policy shift, the U.S. has lifted its suspension of military aid to Ukraine and resumed intelligence sharing with Kyiv, following high-level talks that took place in Saudi Arabia between the two nations.

On Wednesday, Defence Secretary Mr. Healey is scheduled to meet with his counterparts from France, Germany, Italy, and Poland in Paris.

This meeting will focus on collaborative efforts to fortify Europe’s defenses against potential threats from Russia.

Tuesday's discussions in the French capital had included military leaders, who sought to establish commitments for what Sir Keir termed the "coalition of the willing"—a group of nations prepared to lead peacekeeping forces in Ukraine should a resolution be realized.

Mr. Healey emphasized the importance of this juncture for Ukraine's future and Europe’s security, asserting that the UK remains steadfast in its commitment to support Ukraine.

He noted ongoing efforts to enhance defense collaboration and increase military spending among European nations, reinforcing a collective commitment to Ukraine's sovereignty and shared democratic values.

The Prime Minister commended both Mr. Trump and Ukrainian President Volodymyr Zelensky for the progress made, reiterating that it is now incumbent upon Russia to agree to halt hostilities.

Sir Keir echoed remarks from U.S. Secretary of State Marco Rubio, who expressed hope for a swift response from President Putin.

As part of this diplomatic initiative, President Trump indicated that American and Russian officials would convene shortly to deliberate on the ceasefire agreement, remarking, "If we can get Russia to do it, that’ll be great.

If we can’t, we just keep going on and people are going to get killed, lots of people."

President Zelensky stated that the onus lies on the United States to convince Russia to comply with the ceasefire, indicating that the ceasefire could be enacted immediately upon Russia's agreement to the terms.

U.S. special envoy Steve Witkoff is anticipated to travel to Moscow to discuss the proposal directly with President Putin.

In related developments, NATO Secretary-General Mark Rutte is scheduled to visit Washington, D.C., to address the alliance's commitments amid these ongoing negotiations.

However, despite these diplomatic efforts, Kyiv experienced renewed hostilities, enduring a Russian airstrike shortly after signaling support for the ceasefire.

Concurrently, Russian officials reported regaining territory in the Kursk region, previously occupied by Ukrainian forces as part of their strategic maneuvers last summer.