Nearly a third of Ukrainians are now willing to make territorial concessions to Russia to quickly end the war, a significant increase from the past year, though most remain opposed to giving up any land, a poll revealed on Tuesday.

The Kyiv International Institute of Sociology said its poll of 1,067 people on Ukrainian-held territory from May 16-22 found that 32% would agree to some form of territorial concessions, up from just 10% a year earlier and 19% at the end of last year.

It said 55% of Ukrainians remain opposed to making any territorial concessions.

Nearly 29 months since its full-scale invasion, Russia occupies around 18% of Ukrainian territory, including the Crimean peninsula it seized in 2014. Kyiv's troops have been on the back foot this year facing a Russian offensive after their counteroffensive failed to make significant gains last year.

The survey did not ask those polled what territorial concessions they would be open to or how large they should be. KIIS said those polled did not necessarily see concessions as equating to recognizing the territory as Russian.

"For example, some people are ready to postpone the liberation of certain territories until the future at a better time," KIIS said in a statement with its findings.

In 2022, Russiaunilaterally declared it had annexed the Ukrainian regions of Donetsk, Luhansk, Kherson and Zaporizhzhia, which it partially controls.

In remarks published alongside the survey, KIIS's executive director, Anton Hrushetskyi, said Ukrainians remained against the idea of reaching a peace settlement with Russia at any cost.

"It's ... important that in the context of possible 'concessions', Ukrainians are against 'peace on any terms'," he said.