Prime Minister Sir Keir Starmer has said subject readying to support a imaginable Ukraine ceasefire is moving to an "operational phase" aft a virtual gathering with 29 different satellite leaders.
Military leaders volition stitchery connected Thursday successful the UK "to enactment beardown and robust plans successful spot to plaything successful down a bid woody and warrant Ukraine's aboriginal security", Sir Keir said.
The gathering follows Ukraine agreeing to a 30-day ceasefire aft talks with the US. Russian President Vladimir Putin said helium agrees with the idea, but acceptable a fig of pre-conditions for peace.
Ukraine's President Volodymyr Zelensky, who joined Saturday's meeting, said "active unit is needed, not conscionable talks".
"The satellite indispensable recognize that Russia is the lone obstacle preventing peace," helium said.
"The way to bid indispensable statesman unconditionally. If Russia doesn't privation this, past beardown unit indispensable beryllium applied until they do. Moscow understands 1 language," Zelensky added.
He urged European countries to nutrient their ain weapons arsenic soon arsenic imaginable and to speech to the US and its President Donald Trump to scope a woody much rapidly done "full sanctions, beardown pressure, and forcing Russia to marque peace".
In a code aft the video telephone Sir Keir said "the satellite needs actions...not bare words and conditions".
In a statement, helium said the "Kremlin's dithering and delay" implicit the ceasefire connection and its continued attacks connected Ukraine "run wholly antagonistic to President Putin's stated tendency for peace".
Leaders agreed connected Saturday that if Putin refused an "immediate and unconditional ceasefire" they would request to "ratchet up pressure...to person him to travel to the negotiating table", Sir Keir said.
"To present this, we volition accelerate our subject support, tighten our sanctions connected Russia's revenues, and proceed to research each lawful routes to guarantee that Russia pays for the harm it has done to Ukraine," the connection read.
Putin said connected Thursday helium supported the thought of a ceasefire, but added "there are nuances" and asked a database of questions astir details, including whether a ceasefire would let Ukraine to rearm and who would constabulary it.
Participants successful Saturday's telephone included Nato, the European Union, astir 2 twelve European countries, Canada, Australia, and New Zealand.
Military chiefs volition conscionable this week to determination guardant connected "practical plans" for however their militaries tin enactment Ukraine, Sir Keir said.
"We volition physique up Ukraine's ain defences and equipped forces, and beryllium acceptable to deploy arsenic a 'coalition of the willing' successful the lawsuit of a bid deal, to assistance unafraid Ukraine connected the land, astatine sea, and successful the sky," his connection read.
Sir Keir introduced the thought of a "coalition of the willing" to support a ceasefire earlier this month, and connected Saturday said the conjugation had grown and includes backing from Japan and others.
The premier curate has antecedently said helium is "ready and willing" to enactment UK troops successful Ukraine to assistance warrant its information arsenic portion of a bid deal. He has called connected different European countries to perpetrate to factual information guarantees, and said a US "backstop" is needed.
In a quality league aft the summit, Zelensky said determination was a request for immoderate signifier of "boots connected the ground" aft the ceasefire, though helium admitted that immoderate were "sceptical".
Finnish President Alexander Stubb told the BBC's Sunday with Laura Kuenssberg aft the acme that it is "still excessively early" to speech astir putting troops connected the crushed arsenic portion of immoderate information guarantee.
Stubb said Finland was consenting to beryllium portion of efforts to support a bid deal, but said: "It is excessively aboriginal to speech astir boots connected the crushed due to the fact that we don't person a ceasefire, we don't person a bid process. Once we person a wide plan, we commencement doing the commitments."
He said determination was "anywhere from zero to 50 antithetic ways they tin assistance out, boots connected the crushed is lone 1 way".
Thousands of radical person been killed since Russia launched a full-scale penetration of Ukraine successful February 2022.