Stocks fell in Asia overnight and U.S. stock futures slid after President Trump escalated the growing trade dispute with China by threatening to impose tariffs on an additional $200 billion in Chinese goods.

In Tokyo, the benchmark Nikkei 225 index was off 0.41% at 22,588, in early trade Tuesday. Hong Kong's Hang Seng fell 0.43% to 30,309.49 and in Seoul, the Kopsi Index was off 0.37% at 2,367.

U.S. stock futures pointed lower overnight, with the E-mini S&P 500 contract off more than 0.5%. Dow futures also were down 0.51% to 24,885 shortly after 9 p.m. Eastern.

Earlier Monday, U.S. stocks fell sharply at the open on trade-war fears, only to claw back most of their their losses by the end of trading.

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