Just the way this is going to go I guess. Ukraine has to fight with one hand tied behind their back, because the US says so, because appeasement like that always works when autocrats invade sovereign nations… Imagine in the late 1930s the UK ordering, lets say Poland, to not set foot on German soil and only fight in Poland because otherwise (gasp) we might make Hitler really mad and he might do something crazy. So too bad for you Poland, but we’ll just have to adandon support for you if you attack inside Germany, just how these things go…