US President Donald Trump has imposed 25% tariffs on $50bn worth of Chinese goods, accusing Beijing of intellectual copyright theft. The US will impose further tariffs if China retaliates, the White House said. The tariffs affect more than 800 types of products and are due to come into effect on 6 July. China has already vowed to retaliate, raising fears of a trade war between the world's two largest economies. Mr Trump said the tariffs were "essential to preventing further unfair transfers of American technology and intellectual property to China, which will protect American jobs."