As many as 13,000 Ukrainian soldiers have been killed since Russia's invasion in February, claimed a senior adviser to Uraine President Volodymyr Zelensky, reports AFP.
"We have official estimates from the General Staff, and they range from 10,000 to 13,000 dead," said adviser Mykhailo Podolyak to Ukraine's Channel 24 on Thursday.
Zelensky would make the official data public "when the right moment comes", he added.
In June, as Russian forces battled to take full control of the easternmost Lugansk region, Zelensky said Ukraine was losing "60 to 100 soldiers per day, killed in action, and around 500 people wounded in action".
Russian Defence Minister Sergei Shoigu in September said 5,937 Russian troops had been killed in the nearly seven months of fighting to that point.
Both sides are suspected of minimizing their losses to avoid damaging the morale of their troops.
Earlier, in previous month, top US general Mark Milley said more than 100,000 Russian military personnel have been killed or wounded in Ukraine, with Kyiv's forces likely suffering similar casualties.
Bd-pratidin English/Lutful Hoque
