China-US trade tensions may last 20 years: Alibaba's Jack Ma

Alibaba Co-founder Jack Ma has said the relationship between the US and China may face "turbulence" for the next twenty years if things aren't handled carefully. He added it was natural for two countries that have worked together to have issues. If negotiations fail, the US is set to impose 15% tariffs on additional $160-billion Chinese imports starting December 15.