U.S. stock futures and the dollar tumbled after President Trump unveiled sweeping tariffs on trading partners that were higher than investors had expected.

Asian markets and U.S. futures have tumbled following U.S. President Donald Trump's announcement of big increases in tariffs on imports of goods from around the world

U.S. stocks turned sharply lower in after-hours trading after President Donald Trump announced sweeping new tariffs of at least 10% on imports from all trading partners. The broad S&P was down 1.8%, the Dow Jones Industrial Average was 0.