Market turbulence kicked in as U.S. stock index futures took a nosedive following Trump's announcement of potential 10% tariffs targeting entities resistant to the Denmark deal. The sharp selloff in equity futures reflects trader concerns about protectionist trade measures and their ripple effects across global financial markets. This kind of policy volatility tends to influence risk appetite in broader asset classes, including crypto markets, as investors recalibrate their positions during periods of geopolitical and trade uncertainty.