Stephen Sackur is in Berlin for an exclusive interview with Germany's vice-chancellor and finance minister Olaf Scholz. Thirty years after unification, Germany is Europe's economic powerhouse, but could it be running out of gas? Growth is down, so are exports. Critics point to an economy dangerously reliant on the technologies of the past, rather than the future. Amid Brexit tensions, and economic nationalism in the US and China, does Germany need to reboot its economic model? Show less