“Crimea is securely fortified militarily and is too tough for anyone, especially Ukrainian nationalists.

No matter how brave Zelensky is, all his words and promises are just another zilch,” Gempel told RIA Novosti.

Earlier, President of Ukraine Volodymyr Zelensky said that Kyiv would definitely return Crimea under its control.

State Duma deputy from the Crimean region Aleksey Chernyak also warned the authorities of official Kyiv against encroachments on Crimea, noting that this would have fatal consequences.