What needs to be done is simple: You tell Trump quietly to Fuck Off.

That if he continues in this vein with his gangster demands with menaces, then all Yanqui bases in the UK and Europe will be closed and all military personnel send home.

He's made it very clear after all that the US is now a threatening hostile power: it therefore should be treated as such.

But of course, that won't happen because the Independence of European states is an illusion.
They/we are all Satraps to the Yanqui empire and will bend: them bend over lower exactly when and if instructed.