Paul,
And if not successful in stopping war, what do we do when it comes to our shores?

Paul,

That was a somewhat pointless post. No one wants this war other than Putin, and the only way that Putin is likely to stop the war is either if he occupies the whole of Ukraine or if his army is soundly defeated.

As for the justification, Russia has no justification whatsoever, however, given the extensive atrocities committed by the Russian forces, the Ukrainians are more than Justified in defending themselves.

As Putin has been clear on his ambition to not only occupy Ukraine but the Baltic states etc, my view is that

You cannot argue with a madman. Ukraine is only the first
step in Putin's goal to re-instate the USSR and rule Eastern
Europe. He's always stated openly that the collapse of
the USSR was a tragedy and should not have happened. To
him winning at all costs is his goal. For that reason -
Putin needs to be deposed - sooner rather than later.
It's the only way this war can be stopped.

continued..

My view is that if the Ukrainians backed with modern weapons inflict enough damage to Putin's army, it won't be in any condition to launch any more wars for a few decades.

shadowminister,

Fingers-crossed that you are right.

No takers on what we’d do if invaded ?
And remember we have no land borders for friendly nations to slip us some of the needful.