Why Can’t the West Admit That Ukraine Is Winning?
theatlantic.com
theatlantic.com
The opponent should not use the machine gun. It may even be unlikely that they'll use it. But the only reason the unarmed boxer is winning is because their opponent is not desperate enough.
I hope that Russia is never pushed to use its tactical nukes or any of its other astonishingly destructive weapons, but there's no reason right now to assume that they won't.
By this behavior you only encourage him to use this option.
Otherwise they just make a huge mess of contested ground. That tends to make things worse for the invader than for the defender.
(This assumes that Putin doesn't want an empty, desolate, ruined Ukraine as Russia's buffer against NATO, being prepared to give up Sevastopol for it. At this point Ukraine has a lot of industrial capacity and a lot of natural resources Russia could still exploit.)
Kyiv