Two Ships Are Fired On as Iran Says the Strait of Hormuz Is Closed Iran’s Revolutionary Guards said they were closing the strait until the U.S. lifted its blockade. For Iran, Flexing Control Over ...

Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.