Mohamed El-Erian - Chief Economic Adviser, Allianz

Sarah Montague speaks to Mohamed El-Erian, chief economic adviser at insurance giant Allianz, about the future of the economy. America's economic growth is currently well above 3% and unemployment is near a 50-year low. President Trump claims it is the best it has ever been and has taken the credit for that. But he is threatening a trade war with China at a time when many economists are warning that the US and the world face another recession. Does Mohamed see dark days ahead?