This weekend marks three decades since the wall fell, yet stark divides remain between East and West. We revisit that moment of hope that remains unfulfilled. Ethiopia’s Somali state was until recently the country’s most repressive; a visit to one of its prisons reveals a tremendous transformation for the better. And China’s effort to boost its national football team: naturalising foreign talents. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer