The war in Ukraine has been a tragic and costly tutorial in twenty-­first-century conflict. Both sides have mobilized and reshaped their societies, attacked a variety of important targets, and ...

IEMG delivered a stronger 1-year return and experienced a steeper maximum drawdown, but IEFA had higher 5-year returns. IEFA focuses on developed markets, while IEMG targets emerging markets with a ...

Evolutionary theory is the area that focuses on further development and refinement of the modern synthesis of evolution and genetics. Notable topics include the appropriate level of selection, the ...

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.