I am not sure how strong western militaries are in terms of short range missile systems. But whatever we had, we need more of them.
And we should get ourselves a whole load more drones and so on to destroy Russian artillery operating at a distance.
All of this asap, because if Russia makes progress in Ukraine, then they are next door to several more NATO countries.
I don't doubt we can defeat their conventional army if we invest agressively. The 2% of GDP target is probably enough. But let's get there pronto.
And we ought to arm up Ukraine to make them a strong neutral power, if we are not adding them to NATO. Russia's idea to weaken them is an obvious non-starter.
That leaves Russia's nuclear threat. But that will have to be dealt with by negotiators, unless there's some secret system to destroy nuclear missiles in flight.
All very obvious, but worth saying all the same.