"Whoever, and however much they try to destroy, they will face many times more destruction themselves and will regret what they are trying to do in our country," Putin said on Dec. 22.

Russia's Kazan city was targeted by a major drone attack from Ukraine on Saturday. The attack damaged a high-rise apartment building but did not cause any casualties. Tatarstan's leader Rustam Minnikhanov confirmed the attack on Telegram saying that "today Kazan suffered a massive drone attack.