Global markets faltered Tuesday as U.S. President Donald Trump sought to oust Federal Reserve Governor Lisa Cook over alleged mortgage improprieties. Cook’s refusal to resign has fueled fears over the erosion of the Fed’s independence, a pillar of global financial stability. The dollar weakened, Treasury yields slipped, and equity futures dropped as investors weighed the risks. Analysts warn political interference in U.S. monetary policy could unsettle global markets, particularly amid trade tensions in Europe and Asia. Speculation of a September rate cut now looms, but uncertainty threatens investor confidence worldwide.