I've found Opus 5.5 is quite good at surfacing and clarifying these issues using Grilling[0]. Often I find that I want to expand the scope of work much larger than Claude would consider based on my original request.
Cost per intelligence-adjusted token has been in free-fall since GPT-3 landed five years ago [0]. I see no compelling reason to think we'll see that trend suddenly stop, much less reverse.
If your country's defense department is conducting itself ethically, and the contracts are for equipment or technology that is not inherently ethically fraught (like autonymous weapon systems), then one might consider that acceptable if you aren't a pacifist. An enormous amount of US military technology and weapons have been recently used to perpetuate a genocide, so the US is certainly an outlier in the global landscape.
Among the list of countries which supply arms to Israel are UK, Canada, Germany, Australia, Netherlands, India, Italy, Taiwan, Romania and a few others. The US is not unique in this by any means.
If I recall correctly solar panels are already so cheap that to halve the installed cost again will require most of the efficiencies to be found in other costs like manufacture of associated hardware and equipment and installation. I don't know if those costs will be so easy to reduce.
Edit: He has a lot of footage of him cutting out and placing letters and wires on his YouTube channel, but it doesn't show him applying any adhesive. Now I really want to know how he does it.
0. https://github.com/mattpocock/skills/blob/main/skills/produc...
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