Because of his incessant personal attacks against the media, Donald Trump is likened to Richard Nixon. But, rarely are these comparisons made in the domain of foreign policy. That’s unfortunate. Nixon’s Ten Commandments of Statecraft are one legacy—of the only US president to resign—in which today’s Republicans might take pride.
And, if there is one contemporary context in which these Commandments matter more than all others – even more than a trade war – then it is nuclear war.
Nuclear war is less theoretical than at any time since Nixon’s presidency. Even if the Korean peninsula is denuclearised thanks to a Trump-Kim summit, the risk of a nuclear arms race and conflagration involving Iran, Saudi Arabia, and Israel is real.
The July 2015 Iran nuclear deal (formally called the Joint Comprehensive Plan of Action) is the risk-mitigating device: by 12 May, Trump must choose whether to keep or scupper it. In deciding, what lessons should the 45th American president draw from the 37th president?

