As for the official Ukraine Troll what exactly is the goal? Surely we do not expect the Ukrainians to fly F16s, they aren't trained, they don't have the runways, they don't have the maintenance crews, they don't have the support needed.
Also, it is unlikely they will bring any significant number of tanks to defend against Russia before they plow through the country.
So what is the goal here? Tell them yes when you know the real answer is no? Encourage the Ukrainians to go and fight to the very last 60 year old man in order to weaken Russia?
The US and NATO combined can definitely defeat Russia in a protracted conventional war, unless China, N. Korea, Iran join with Russia (in which case it will be much more complicated). But what if Russia is not willing to fight a conventional war that they know they will lose but instead decides to go nuclear? Who wins then?