“Without Reagan the cold war would not have ended, but without Shultz, Reagan would not have ended the cold war.” This quotation of Mikhail Gorbachev – from the preface of In the Nation’s Service, a biography of George Shultz – now has a bittersweet taste. Reagan died in 2004, Shultz in 2021 (at 100) and Gorbachev in 2022. The cold war is having a renaissance that threatens the legacies of all three. Vladimir Putin has returned Russia to authoritarianism, suspended its participation in the last US-Russia arms control pact and, with the invasion of Ukraine, put the risk of catastrophic...