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International public opinion on the Ukraine peace process

  • Research
  • 5 December 2025

At a key moment in the peace process, Britain stands out for its unity on Ukraine. 

Our new international polling across Britain, France, Germany, Poland and the USA shows strong support for Ukraine, alongside widespread rejection of the proposed peace deal. It also shows how attitudes have shifted since our last cross-country poll in March 2025.

Key findings:

International public support for Ukraine remains steadfast: Clear majorities across the five countries sympathise with Ukraine, and believe that Ukraine’s defence is important to their own nations - figures that have remained stable over 2025.

Across the five countries, majorities reject the proposed peace deal, saying that key elements of the deal are unacceptable and would hand victory to Russia.

Britain leads in rejection of the Witkoff deal: Britons and Poles are the most likely countries to say that key elements of the deal are unacceptable.

Wider concerns about the US President's influence on the conflict, with more people across Germany, France, Britain and the US saying he has hindered the peace process than helped it. Even within the United States, fewer than a quarter (22 per cent) believe that Trump sympathises with Ukraine over Russia. And while 53 per cent of Republicans side with Ukraine, only a third (36 per cent) believe Trump does too.

Most think that the stakes go far beyond Ukraine: Across all five nations, people believe that if Russia is rewarded with territory, it will embolden further invasions of other European countries. More than two-thirds in every country worry about the prospect of a wider war in Europe in the coming years.

Britain is uniquely united on Ukraine: While other countries like Germany are polarised on the conflict, Britain stands out in its unity. Majorities of every voter group stand with Ukraine.

Read the full briefing

Britons reject Witkoff’s peace plan - and most think it would mean victory for Russia

While there is a strong desire across Europe and the United States to see an end to this unjust war and to stop the suffering of Ukrainians, few want a peace that rewards Russian aggression or leaves Ukraine vulnerable. Across all five countries, people tend to reject key elements of Witkoff’s proposed peace deal.


In particular, majorities in France, Britain and Poland - as well as a plurality of Americans and Germans - believe that recognising occupied territory as Russian or reducing Ukraine’s armed forces would be unacceptable conditions for a peace deal. Notably, Britons and Poles are leading this opposition to the Witkoff deal.


What’s more, majorities of Britons and Americans think these concessions would constitute a Russian victory: 51 per cent of Americans think a reduction in Ukraine’s armed forces or territorial concessions would indicate victory for Russia; nearly two-thirds of Britons (64 per cent) think that recognising occupied regions as Russian would signal victory for Russia, and 62 per cent say the same about a ban on Ukraine joining NATO.

Across the five countries, most think the stakes go beyond Ukraine

In part, each of these countries are concerned about the peace deal because they believe the stakes go far beyond Ukraine: many think that a bad deal could reward and embolden Russian aggression and spiral into a wider European war. Majorities in each of the five countries believe that, if Russia succeeds in capturing Ukrainian territory, it will attempt to invade other countries. And there is a wider fear: most Germans (66 per cent), French people (76 per cent), Poles (68 per cent), Britons (68 per cent) and Americans (57 per cent) are worried about the prospect of war in Europe in coming years.

Britain is uniquely united over Ukraine

While topline support for Ukraine spans across the five countries, Britain stands out. In other countries, voters of different parties are polarised over the war in Ukraine: in Germany, only 20 per cent of AfD voters sympathise with Ukraine, while 24 per cent sympathise with Russia. In the United States, just over half (53 per cent) of Republicans sympathise with Ukraine, compared to 80 per cent of Democrats.

In contrast, strong majorities of every British voter group stand with Ukraine - ranging from 64 per cent among 2024 Reform voters to 83 per cent among Conservative voters. It’s a rare point of consensus, and one that makes Britain unique in its attitudes toward the conflict.

Read the full briefing