With Donald Trump blowing hot and cold on whether the US will strike Iran or not - how will this uncertainty and unpredictability play out with Iran's biggest trading partner - China? At least two thousand people have been killed in the Islamic Republic's brutal crackdown on protests, which were sparked by the country's soaring inflation and crippling price rises. In response the US President initially announced a 25% tariff on any country doing business with Iran. So could it spell the end of the US-China Trade war truce? And what would that mean for the world? From Beijing, ITV News Asia Correspondent tells Lucy Watson what you need to know.