Sakharov's legacy on the centenary of his birth

Andrey Sakharov was a Soviet physicist who played a leading role in his country's nuclear weapons programme. However, in the 1960s he fell out of favour with the regime due to his activism for disarmament and human rights. On the 100th anniversary of his birth, Sakharov's legacy is more relevant than ever. Since 1988, the European Parliament has awarded an annual prize for freedom of thought named after him.