Andrei Sakharov, the physicist who had helped design the Soviet hydrogen bomb, continued publishing dissident writings smuggled to the West that challenged Soviet secrecy and human rights abuses. His activism, building through the mid-1970s, culminated in the Nobel Peace Prize that October, an honor the Kremlin refused to let him travel to Oslo to accept.
Andrei Sakharov's transformation from decorated weapons scientist to the Soviet Union's most prominent dissident is one of the strangest character arcs of the Cold War. He had been central to designing the RDS-37, the USSR's first two-stage thermonuclear weapon, earning him the title 'Hero of Socialist Labor' three times over and a dacha's worth of state privileges.
But watching the destructive potential of what he'd built curdled into moral horror. By the mid-1970s he was smuggling essays to Western publishers arguing that intellectual freedom and human rights were inseparable from global security, that a regime willing to silence its own scientists could not be trusted with nuclear arsenals. The KGB stripped him of honors and placed him under surveillance, but his international stature made him nearly impossible to simply disappear the way lesser dissidents were treated.
When the Nobel Committee awarded him the Peace Prize in October 1975, Soviet authorities barred him from leaving the country; his wife, Yelena Bonner, delivered his acceptance lecture in Oslo instead. Sakharov spent years afterward internally exiled to Gorky before Gorbachev freed him in 1986, and he lived to see the system he'd challenged pushed toward reform he'd long argued was necessary.