Fed's Williams Says U.S. Monetary Policy Remains Well Positioned For Uncertain Economy; No Way To Know Yet How Iran War Impact Will Play Out For U.S. Economy; Risks To Both Sides Of Fed's Mandates Have Increased; Economy Is Presenting 'Unusual Set Of Circumstances'; Market Energy Outlook Benign, But There Are 'Plausible' Bad Scenarios; Inflation Likely To Be 3% This Year, Back To 2% Target In 2027