A Ukrainian army artillery crew dismounts from a self-propelled 122mm Howlitzer after firing on a Russian position on 18 February 2023 near Bakhmut, Ukraine. (Photo: John Moore / Getty Images) 
"In less than a week, starting from 6th March, we managed to kill more than 1,100 enemy soldiers in the Bakhmut sector alone, Russia's irreversible loss, right there, near Bakhmut," Zelensky said in his nightly video address.
He said Russian forces had also sustained 1,500 "sanitary losses" - soldiers wounded badly enough to keep them out of further action. Dozens of pieces of enemy equipment were destroyed as were more than 10 Russian ammunition depots.
Reuters could not independently verify the accounts.
(Reporting by Ron Popeski and Nick Starkov; editing by Diane Craft.)