All this talk of sending high tech weaponry to Ukraine is basically just for propaganda. Ukrainians do not have the training to use these systems. It takes months and months. HIMARS MLRS systems and Grey Eagle drones are sophisticated systems and need highly trained crews to operate them and also a specific maintenance and logistics infrastructure to support them. Ukraine does not have that.
This guy has some great analysis. I don't know his bona fides, I just happened to find him on YT.
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You cannot reason someone out of a position they didn't reason themselves into.