Central bankers are increasingly worried that inflation — worsened by soaring oil prices and an AI investment boom — is not on a path back to their 2% target. Just months after being selected by President Trump with an expectation that he would cut rates, US Federal Reserve chief Kevin Warsh has hiked them. Key points and original sources are listed below.

• Central bankers are increasingly worried that inflation — worsened by soaring oil prices and an AI investment boom — is not on a path back to their 2% target.S1

• Just months after being selected by President Trump with an expectation that he would cut rates, US Federal Reserve chief Kevin Warsh has hiked them.S2