Ukraine President Volodymyr Zelensky has been to the recaptured city of Izyum, a key logistics hub in north-eastern Ukraine.
During his visit, Zelensky thanked troops who took part in the counter-attack against Russian occupiers, reports BBC.
Zelensky oversaw a flag-raising ceremony and said the Ukrainian flag would return to every city and village in the country.
In a late evening address on Tuesday, Zelensky said his forces were fortifying their hold over 8,000 sq km (3,088 sq miles) of retaken territory in the Kharkiv region.
On Thursday last, President Zelensky said Ukrainian forces had retaken 1,000 sq km, but by Sunday, that stated figure had tripled to 3,000 sq km.
In recent days, Ukraine's army has reclaimed swathes of occupied territory, forcing Russian troops to retreat.
Bd-pratidin English/Golam Rosul
