The Federal Reserve’s rate-setting committee unanimously raised its key interest rate Wednesday, and nearly all policymakers indicated that a second increase later this year would likely be appropriate. The shift from a wait-and-see approach reflects renewed fighting in the Middle East, higher gas prices and evidence that economic growth remains healthy while inflation stays elevated. Gas reached $4.44 a gallon Thursday, up 38 cents from a month earlier, while diesel hit a record $6.40, increasing transportation costs. Despite the hike, the 10-year Treasury yield slipped Thursday as investors appeared reassured that the Fed was taking inflation seriously. Federal Reserve Chairman Kevin Warsh said hiring, private-sector earnings and business investment had improved, though inflation has outpaced average income growth for five consecutive months. Longer-term borrowing costs also reflect elevated inflation, heavy bond issuance to fund artificial-intelligence data centers, stronger growth and more than $40 trillion in U.S. government debt. President Trump criticized the Fed and called for lower rates but did not personally attack Warsh, unlike his repeated attacks on predecessor Jerome Powell.