Between 1949 and 1989 the Soviet Union tested 456 nuclear bombs in Semipalatinsk in Kazakhstan. The area the size of Belgium became known as the Polygon and when Kazakhstan became independent – 25 years ago this week - it inherited the world’s fourth biggest nuclear arsenal. The BBC’s Rustam Qobil visits the Polygon to piece together its remarkable story.
Published on Sunday, 18th December 2016.
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