A destroyed Russian tank is seen as Ukrainian serviceman rides a tractor and tows a Russian military vehicle, amid Russia's invasion on Ukraine, near the village of Dolyna in Kharkiv region, Ukraine September 23, 2022.
Russia, meanwhile, pressed on with its call-up of hundreds of thousands of men to throw into the seven-month war, seeking to reverse its recent losses.
The Russian mobilization — its first such call-up since World War II — is sparking protests in Russian cities, with fresh demonstrations Sunday.
It is also opening splits in Europe about whether fighting-age Russian men fleeing in droves should be welcomed or turned away.
For Ukrainian and Russian military planners, the clock is ticking, with the approach of winter expected to make fighting more complicated.