Russia is likely to mobilize another 300,000 troops later this year, according to Ukrainian President Volodymyr Zelensky, as it tries to complete the capture of a long-coveted region of east Ukraine.

In wide-ranging remarks released Sunday, Zelensky said he expected that the Russians would end the year occupying the same amount of Ukrainian territory as at the beginning of the year, despite enormous losses of manpower.

“Russia has lost 267,000 personnel since the start of the year, including around 155,000 killed to date,” Zelensky claimed.