The US got great bang for the buck at the beginning of the war but diminishing marginal returns set in as soon as the spring offensive flopped. The warmongers who declare that Europe is at risk and we must keep throwing money away should be ignored.
You don’t need a phd in Russian studies to understand that Putin rues the day he listened to his advisers. Can you imagine some KGB colonel going to Putin and saying “Let’s invade Lithuania”?
One of Zelenskyy’s comedian buddies needs to tell him it’s time to negotiate.
Retaking of Kharkiv and Kherson is marginal diminishing returns?
To be fair, most electronics these days are so tightly integrated (literally IC, Integrated Circuits!) that there's not much you can do even with a full on schematic.
Long gone are the days of bigly electronics parts connected by a spaghetti nest of wires and third grade soldering.