News is that:

French President Emmanuel Macron has asked his Belarus counterpart to demand that the country, Ukraine’s neighbor, quickly order Russian troops to leave, claiming Moscow has been given the green light to deploy nuclear arms there.

In a phone conversation Saturday, Macron denounced “the gravity of a decision that would authorize Russia to deploy nuclear arms on Belarus soil,” a statement by the presidential palace said.

Assuming what Macron says is true and that Belarus agreed to host Russian nuclear weapons, would that be contravening any promises Belarus has made in some treaty or agreement?