Interestingly, it's a little bit more complex. The so called two-man rule does exist for release of nuclear arms: https://en.wikipedia.org/wiki/National_Command

Interestingly, it's a little bit more complex. The so called two-man rule does exist for release of nuclear arms: https://en.wikipedia.org/wiki/National_Command_Authority https://en.wikipedia.org/wiki/National_Command_Authority That is, the President's order is necessary, but not sufficient. I think generally this sort of restriction to a single actor suggests an extraordinary level of restraint as a country, rather than discretion. Other actions which require Presidential level direction are drone strikes and cyber attacks.