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It is not as if Ukraine has anything better to offer.They have 260+ captured Russian tanks, for one thing. Ukraine has asked supporting countries to instead send howitzers, anti-air guns/missiles, and multiple-launch rockets. By the end of this war Ukraine might end up with the largest tank army in Europe. https://oryxspioenkop.com/2022/02/attack-on-europe-documenti...
By most reports Ukraine (and Russia for that matter) are both much more limited by supply of trained tank crew than lack of physical tanks. Hundreds of Russian tanks requiring 3 crew members were already being driven by crews of 2 (in some cases untrained), and therefore combat ineffective right from the start.
Russia has lost an estimated 1000+ tanks in 3 months of war, and now has all but stopped doing maneuver operations, whether because they are scared to lose more or have run out of supply. From what I understand Russia’s tank production has entirely stopped for lack of microchips and other components.
> Cruise, ballistic missiles on the conveyor and in the air. Every day and night.
The rate of Russian use of long-distance missiles dropped off dramatically after the first couple months of the war. They wasted their missiles blowing up hundreds or thousands of militarily irrelevant civilian targets (apartment buildings, hospitals, schools, etc.). External experts don’t have perfect knowledge of Russian supplies, but the most plausible inference is that the Russian military is running out of whatever stores they were willing to use here. (Presumably there is still some reserve, but missiles getting used are not being obviously replaced.)
What the Russian military does have a lot of compared to Ukraine is artillery and artillery ammo, and unguided rocket launchers. Pretty much all of the stockpiled 152 mm (Soviet caliber) artillery ammo in Europe was already sent to Ukraine and Ukraine has almost run through it all, but Ukraine doesn’t yet have enough 155 mm (NATO caliber) howitzers to replace the 152 mm artillery that is out of ammo. Hopefully they will get hundreds more NATO howitzers in the coming weeks and months.