The plan was announced after Mr Zelensky held talks in Kyiv with French President Emmanuel Macron, German Chancellor Friedrich Merz, British Prime Minister Keir Starmer and Polish Prime Minister Donald Tusk.

The five leaders then discussed the proposal in a 20-minute call with Mr Trump that had not been previously scheduled and was described as “warm” by a person familiar with the interaction. 

Ukraine and its allies had “an absolutely clear and unanimous stance” on the proposal, Mr Zelensky said.

“If Russia rejects a full and unconditional ceasefire, sanctions should be applied.”

The announcement came after Mr Zelensky hosted the four European leaders for a “coalition of the willing” meeting.

Nato Secretary-General Mark Rutte said “more than 20 leaders” took part in the discussions by joining the meeting remotely.

“In case of violation of this ceasefire, we agreed that massive sanctions would be prepared and coordinated between Europeans and Americans,” Mr Macron said.

“

In

order to prepare this robust and long lasting peace, we will continue to bring our financial and military support to Ukraine.”

Separately, Trump ally, Republican Senator Lindsey Graham of South Carolina, said in April that he had the commitment of 72 colleagues for a Bill that would enact “bone-crushing” new sanctions on Russia and tariffs on countries that buy its oil, gas and other key products if Mr Putin does not engage in serious talks to halt the war.

The punishments would include a 500 per c...