The United States drew closer to its G7 allies on Friday, overcoming differences, at least momentarily, to back Ukraine's territorial integrity and warn Russia to follow Kyiv in accepting a ceasefire or face possible further sanctions.

Russia struck a sedate tone on Friday but acknowledged grounds for cautious optimism, after only backing the "idea" of a U.S. brokered 30-day ceasefire with firm caveats.

The last time Ukraine signed a peace accord with Russia, 10 years ago, it brought only sporadic violence, mounting distrust, and eventually full-scale war. Here’s what we can learn from that history.

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,

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.

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.

The Kremlin has said it does not want to get ahead of itself after Ukraine announced it was ready to accept an immediate 30-day ceasefire with Russia.

The Group of Seven (G7) nations warned Russia on Friday of further sanctions if it does not agree to a ceasefire with Ukraine, presenting a united front despite tensions within the bloc over U.S. President Donald Trump’s approach to allies and Russia.