There will be those on the more cautious end of the spectrum who will argue that Ukraine has already made its point, that Putin’s war of choice must now bring some pain to Russians.

That despite recent setbacks on the battlefield in the Donbas region, Ukraine has shown itself capable of mounting a sophisticated, combined arms assault using all the elements of modern warfare.

In other words, withdraw now with honour, having given the Kremlin a bloody nose, before Russia brings in enough forces to kill or capture the invading Ukrainians.