Global stocks tumble as China retaliates against U.S. tariffs

U.S. and global stock markets plunged again Friday as China announced 34% retaliatory tariffs on all U.S. goods, escalating a trade war sparked by President Trump’s sweeping tariff policy earlier this week. Christina Macfarlane discusses the global fallout and potential economic damage with CNN Global Economic Analyst Rana Foroohar and Economics Professor Ha-Joon Chang.