Fed's Waller Says If War Creates High Inflation, Weak Labor Market, Could Call For Holding Rates Steady; The Longer Middle East War Remains Unresolved, Inflation And Job Risks Increase; High Inflation, Weak Job Market Would Be Challenging For Fed; March Headline PCE Inflation Likely To Hit 3.5% YoY; Possible Energy Price Surge Could Have Lasting Inflation Impact; Markets Appeared To Have Undervalued Risk Of Extended Conflict; Will Be Closely Watching How Inflation Expectations React To Conflict