The US Department of State has commented on Secretary of State Antony Blinken's statement that Ukraine regained half of its territories seized by Russian occupation forces, clarifying his words.

Matthew Miller, Spokesperson for the US Department of State, noted that, including the territory of Russian-occupied Crimea, Ukraine has liberated about 45% of the seized territories.

He said that since 2014, Ukraine has regained 61% of its territory, excluding Crimea.

"Ukraine has already been incredibly successful in regaining territory that Russia had temporarily occupied," he said.

On Sunday, Antony Blinken said that Ukraine had already liberated about 50% of the territory originally seized by Russia.

He added that the US believes that Ukraine's counter-offensive will last at least several more months.