Ukraine had to become extremely parsimonious with their Patriot use as supplied dwindled to a fraction. In many cases Ukraine simply chose not to engage unless

Ukraine had to become extremely parsimonious with their Patriot use as supplied dwindled to a fraction. In many cases Ukraine simply chose not to engage unless the Kinzal/Iskanders were optimally detected and attacking a significant target. And the upgrades really weren't much except adding decoys that had always been an option with Iskander. Now that worldwide inventories of PAC3-MSE are almost non-existent, Russia will push its MIRBM attacks over the next year or more. Ukraine really doesn't have many options other than to continuing their drone offensive against deep targets in Russia.