All three major US stock indexes plunged on Tuesday, marking their largest single-day fall in three months, as President Donald Trump’s standoff with European leaders over Greenland intensified. The S&P 500 dropped more than 1 per cent at the start of trading, marking its biggest morning decline since April, when Trump first announced tariffs on nearly all trading partners. The selloff affected not just stocks, but also debt markets and even Bitcoin, which fell more than 3 per cent despite usually being a safe bet when traditional markets wobble. Gold, on the other hand, reached new record highs.