Russia Invading Ukraine - Is Britain Going to Fight Russia?

The West has made it clear there will be no military consequences for Russia's invasion of Ukraine. So Putin has been emboldened to do what he has done. Now that he is emboldened, we don't know where he is going to stop. And if he goes further, let us say in some terrible imaginary world, he goes into another NATO member state in the Baltics - then UK duty bound to defend that country against Russia. Even saying it makes me feel like, urgh, right? Yeah, you go cold. But we are now thinking it. Of course.