Originally Posted by
Not_a_boffin
Comes across as a very capable CS, with certain preconceptions about defence and an innate assumption that spending more money is not required - at least not in defence.
I think it's not he doesn't think that defence doesn't need more money, but rather, we're not very convincing in saying how'd we spend it.
Don't forget he looks across the span of National Security, and the rest of it (except maybe GCHQ) is far cheaper than Defence. Money applied elsewhere would get a far greater return.