WASHINGTON—Colin Powell, who helped steer U.S. national security policy in the post-Vietnam era as the country’s first black Joint Chiefs of Staff chairman, White House national security adviser and secretary of state, has died at age 84.
His family cited Covid-19 complications in a statement on Facebook, adding he had been fully vaccinated. A longtime aide said Mr. Powell also had undergone treatment in recent years for a blood cancer, multiple myeloma, which is known to weaken the immune system.