Russia threatens retaliation over American missiles.. What is the story?

Russia said that its army succeeded in repelling a Ukrainian attack using long-range American-made Atakam missiles in the Belgorod border region.
In response to this attack, Moscow threatens to retaliate, while the Russian Ministry of Defense announced in a statement via Telegram that it shot down all of the missiles that were launched.

Russia threatens

She confirmed that Moscow would respond appropriately, and last November, US President Joe Biden had allowed Kiev to launch attacks on some targets inside Russia using American “Atakham” missiles.
Russia stated that it would respond to any attack using these missiles on Russian territory by launching hypersonic missiles at targets in Ukraine.

In November, Russia launched an Oreshnik medium-range hypersonic missile, which can be equipped with nuclear warheads, at the industrial city of Dnipro in Ukraine.

Russian attacks

However, damage was minor and the missile did not carry any nuclear warheads, despite Russia’s claim that all of the Atakams were intercepted.
At that time, a residential tower in the Russian city of Voronezh, east of Belgorod, was evacuated due to a drone attack, according to the city’s mayor.
The mayor indicated at the time that about 100 people had been evacuated to a safe place, and a state of emergency was declared in one area of ​​the city to facilitate efforts to remove the damage.