Translation of "Charnière" in English

Un moment charnière va survenir en Grande-Bretagne

A huge tipping point is about to happen for Great Britain

Et que ses propos peuvent créer un moment charnière

and that their words can create a tipping point,

Qui relient les deux carapaces ensemble comme une charnière.

which are organs that hold the two shells together like a hinge.

RG : C'est tout, tout est là, ce discours est un moment charnière.

RG: And that's it, right there, that speech was a tipping point.