In a meeting with President Vladimir Putin, Russian Defense Minister, Sergei Shoigu, said that Russia has completed its drive to mobilize 300,000 reservists for battle in Ukraine.

Shoigu said that "the task of recruiting 300,000 people has been completed. No other tasks are planned."

Additionally, Moscow has announced the end of the movement of civilians within occupied Kherson, organized by Russia-installed authorities in the southern Ukrainian region in the face of a counter-offensive from Kyiv.

Kyiv's forces are preparing for a fierce battle to retake the region's main city Kherson and the surrounding areas on the right bank of the Dnipro River after making major gains in Ukraine's east and south.

The city with a pre-war population of around 288,000 people, was one of the first to fall to Moscow's troops in the early days of the February military operation and retaking it would mark a major milestone for Kyiv.

Moscow's forces have vowed to turn Kherson into a "fortress" faced with Ukraine's advancing troops in the region that the Kremlin claims to have annexed.

Since mid-October the occupation authorities have urged Kherson residents to cross to the left bank of the Dnipro River, deeper into Moscow-controlled territory and closer to regions of southern Russia.

By Friday, the movement of residents -- which Kyiv has compared to Soviet-like "deportations" -- was complete.

"The work to organize residents leaving to the left bank of the Dnipro (river) to safe regions of Russia is completed," Sergei Aksyonov, the Moscow-appointed head of Crimea, a peninsula Moscow annexed from Ukraine in 2014, said on social media late on Thursday.