Can Ukraine Resist and Reemerge from Lost Ground?

Ukraine has lost some ground as of recent because they did not have the correct tools for the fight. The essential question is Can Ukraine Resist and Reemerge from Lost Ground? They will need to hold ground and eventually regain ground and that won't happen unless they are protected from relentless shelling.

Under the right circumstances they can come back. Russia is using its large arsenal of semi-modern old equipment, large troops ranks, and superior artillery in the fight. They are overwhelming the smaller but more functional Ukrainian forces.

They can spend all day softening their targets and keep Ukrainian troop movements hunkered down and at a minimum (A strategy that would likely work against Russia with the right equipment). Supplies often have to trickle in and with shortages it is apparent Ukraine is in a tough spot.

Three interesting things are going on.....

Interesting #1 It appears that the Russian nation is defaulting for the first time since the Bolshevik Revolution. There is some dispute on the form of payment (i.e. rubles) and presence of the capital. For now it appears to be a default.  Russia Defaults on Debt

Interesting #2 NATO increased rapid reaction force from 40,000 to 300,000 in response to heightened attention. There is a general increase in defense measures as Russia and China carve up spheres of influence. NATO Increases Forces.

Interesting #3: G7 will provide more support for Ukraine in terms of NASAMS (surface to air), counter-battery radars, and artillery. G-7 Military Support

This is what I would expect. With new artillery on the way, the ability to detect Russian artillery (and hopefully strike those positions), and more ammo they will be able to at least neutralize Russia's immediate advantage. That may require a change in tactics and more troop involvement by Russia.   

Additional Russian troop involvement means more casualties and hard to gain advantages of which Ukrainian army still has the defense advantage. They will need to regain ground but that isn't the argument at this moment. Likewise, they will need to replenish their troop supplies somehow and some of that is likely to come from mercenaries (Maybe more Ukrainians or outside help.). 

The default on debt is an important one. One risk Russia could face is that they cannot finance their war. The bloodier it gets, the more it looses, the more resources grinded out, etc... the higher the toll. We will have to wait to see what actually happens. Putin is a little of a KGB fox so he likely thinks a couple of moves ahead in the global chess game. Let us wait and see.