- The cheapest, safest way to "invade" the US (or any Western democracy) isn't through an army, but through manipulation of news, social media, and elections
- Indeed, if I'm Iran and I want Iraq attacked, it's much cheaper to manipulate the US into doing the dirty work than to attack myself.
- Much of the same is true of corporations -- a million spend lobbying can "buy" hundreds of millions in corrupt (but usually legal) profits.
- The checks-and-balances put in 250 years ago aren't adequate to defend democracy.
As a footnote: The second-cheapest way is through asymmetric attacks, such as cyberattacks, and increasingly, bioattacks. I don't want a debate about COVID19 origins, vaccines, or what-not (please don't), but the fact of the matter is that engineering a virus like COVID19 is within the grasp of most nation-states. That vulnerability went from theoretical to very, very visible. Genetic engineering will only get better. It's not implausible that soon we'll be able to engineer viruses which lead to long-term disability, decrease the IQ of a nation, or are at least somewhat selective by ethnicity (of course, once released, all bets are off). It's definitely possible to have vaccine-in-hand when releasing a bioweapon.