India, Jan. 21 -- US financial markets experienced a steep and sudden downturn after President Donald Trump escalated his push to gain control of Greenland, sending shockwaves through global markets. Major US stock indexes suffered their worst losses in months, the US dollar weakened, and Treasury yields climbed, an unusual combination that points to growing investor unease.

The sell-off followed Trump's announcement of tariff threats linked to Greenland, triggering fears that geopolitical conflict could spill over into economic and trade fronts. This has revived the so-called 'Sell America' trade, where investors ditch US assets amid heightened political risk.

The sharp market reaction has revived fears of a broader "Sell America" trad...