Ukraine's military chief Oleksandr Syrskyi said in an interview published on Wednesday that Russia had launched a new offensive on the northeast of the country, adding that a large increase in assaults was already being observed.

Ukraine's president says the military has captured two Chinese men fighting alongside the Russian army in the eastern Donetsk region.

Ukrainian President Volodymyr Zelensky said two Chinese nationals fighting in the Russian army have been taken prisoner in eastern Ukraine.