UK PM Keir Starmer's resignation announcement triggered no market reaction—sterling, gilts, and equities barely moved. Contrast that with the US: a Trump resignation would likely spark immediate volatility across equities, bonds, and crypto. The divergence highlights how tightly US political risk is priced into global markets, while UK political drama has become white noise for traders. Markets are signaling they care far more about who controls the White House than 10 Downing Street.