> In general, any solution that requires people to just go along with it is doomed to failure - someone eventually will figure it's in their benefit to defect. Stable solutions are ones that, by design, align with default human behavior. Like MAD.

The problem with MAD is that it is human nature not to assume that your own destruction will occur. Which ends up meaning that these gentlemen's agreements like open skies and free inspections are more necessary than you'd intuitively assume. MAD only works if the human on the other side truly believes that he will be destroyed.