General David Petraeus
With a\xa0storied career that includes leading coalition forces and counterinsurgency efforts in Iraq and Afghanistan, Retired Army Gen. David Petraeus definitely knows a thing or two about leadership.\xa0According to Petraeus, effective leaders don't dictate the tactics; they establish the mission, boundaries and direction, then empower the team to determine the best route.\xa0Great leaders also understand that, sometimes, big ideas need to evolve\xa0\u2014 whether they're running a military operation or private-sector company.