G7 nations emphasised on Friday the need for robust "security arrangements" to ensure a ceasefire between Ukraine and Russia, warning Moscow to follow Kyiv in agreeing a ceasefire or face further sanctions,

Russian President Vladimir Putin said Thursday that Russia agrees in principle with the U.S. ceasefire proposal, but the terms need to be worked out.

U.S. officials were in Moscow for talks, and the Russian leader said he was open to a cease-fire, but President Volodymyr Zelensky of Ukraine expressed skepticism.