U.S. Treasury Secretary Scott Bessent will hold a press conference Monday at the Treasury Department at 2 p.m. ET (1800 GMT), after saying this week that he would provide details of planned sanctions against Iran. The event follows President Donald Trump’s warning of economic consequences for any country providing “any type of lifeline to Iran.” It also comes after the Treasury shifted to a more aggressive pace of buybacks of longer-term government debt. The department announced support measures for long-duration bonds on Wednesday, temporarily slowing a rise in yields that had unsettled global investors, although much of the decline in yields had been reversed by Friday. Long-term Treasury yields had recently climbed on concerns over rising U.S. government debt, inflation remaining above the Federal Reserve’s 2% target and the implications for investment flows.