Wall Street stocks ended another tumultuous week with a brisk late rally as a top Federal Reserve official said the US central bank was prepared to intervene if strains in markets grew, and traders remained fixated on tariffs.

U.S. stocks are shaking Friday as President Donald Trump’s trade war with China escalates further and U.S. households get even more worried about it. Gold's price is rising, the U.S. dollar's value is falling and other financial markets are also swinging in indications of rising fear.

By Jeff Mason, Philip Blenkinsop and Joe Cash WASHINGTON/BRUSSELS/BEIJING (Reuters) - U.S. stocks sank sharply on Thursday, giving back some of the huge gains that followed President Donald Trump's decision on Wednesday to postpone many of his sweeping tariffs on dozens of countries,