The Powell Doctrine "posits that the United States should only go to war as a last resort," Mansoor told NPR, "with a clear and obtainable objective and exit strategy, and with overwhelming force and strong domestic and international support. And as the US military struggles to promote and retain a diverse officer corps, many black officers point to Powell as an inspiration and a role model, including the current Defense Secretary Lloyd Austin, himself a retired four-star Army officer, and the first black Pentagon leader. Powell's doctrine of sufficient force and his call to "understand what you're getting into," were clearly tested during the wars in Iraq and Afghanistan, as Peter Mansoor of Ohio State pointed out.