Russian accounts said Moscow's forces had repelled Ukrainian attacks near Bakhmut, farther north where fierce fighting has also flared and on the southern front.
In his nightly video address, Zelenskiy said Ukrainian forces faced fierce Russian resistance in all frontline sectors.
Very fierce attacks," Zelenskiy said, referring to Bakhmut and other centres in the east.
Russia's Defence Ministry said its forces had thwarted eight Ukrainian attempts to advance near Bakhmut and nearby areas.
Two Ukrainian attacks were countered near Lyman and Svatove farther north and attempted advances in the south were also stopped.
Persons:
Volodymyr Zelenskiy, Ukrainian Special Operations Forces Viktor Khorenko, Zelenskiy, Oleksandr Syrskyi, Syrskyi, Serhiy Cherevatyi, Cherevatyi, Ron Popeski, Oleksandr Kozhukhar, Leslie Adler, Cynthia Osterman
Organizations:
Ukrainian Special Operations Forces, Presidential Press Service, REUTERS, Senior, Ukrainian, Russia's Defence Ministry, Thomson
Locations:
Ukraine, Donetsk region, Russian, Bakhmut, Azov, Crimean, Moscow, Izmail, Lyman