The Federal Reserve (Fed) kept interest rates unchanged on Wednesday, leading to a surge in oil prices and a drop in U.S. stock prices. The decision was seen as the most divided vote since 1992 and led to a flurry of trading activity, with oil prices rising to $120 a barrel due to supply fears. Meanwhile, Japan is facing challenges including the oil shock, rising bond yields, and a weak currency. The yen has weakened below 160.00 per dollar, which could prompt Tokyo to buy yen. The Fed's next replacement, Kevin Warsh, cleared a key Senate hurdle and is expected to be confirmed in a full Senate vote by May 11. The future of the Fed and its outlook on AI revolution and capex spending will determine sentiment and market prices in the coming weeks.