Zelensky has shown a remarkable ability to consistently inspire Ukrainians and maintain a strong emotional connection to the country and its people. Interestingly, pioneering research conducted years ago by the World War II-era Office of Strategic Services (OSS) continues to inform current thinking on leadership. The OSS, the predecessor to the CIA, sought out decades ago to find some way to quantify and best understand the mix of attributes necessary to become a great leader. “Are leaders born or made? I believe the answer is both,” said Mike Mears, a now-retired senior member of the intelligence community who evaluated and...