Officials from Britain, the U.S., European nations and Ukraine will meet in London on Wednesday to push for a peace deal between Moscow and Kyiv, amid growing reportBritish Defense Secretary John Healey said the meeting follows talks last week in Paris and will include “what a ceasefire might look like and how to secure peace in the long term.

U.S. Secretary of State Marco Rubio will not attend talks in London aimed at ending the war in Ukraine, State Department spokesperson Tammy Bruce said on Tuesday, after earlier saying he planned to travel to London.

Diplomats from the UK, France, Germany, Ukraine and the US will hold fresh talks in London on Wednesday aimed at securing a ceasefire in the three-year war between Ukraine and Russia. The talks come amid growing speculation that Russia might be willing to halt its invasion along current front lines in return for significant concessions.