“We also can't try to take over and rebuild every country that falls into crisis. That's not leadership; that's a recipe for quagmire, spilling American blood and treasure that ultimately weakens us. It's the lesson of Vietnam, of Iraq - and we should have learned it by now.”

American politician and author, 21st century. He served as the 44th president of the United States from 2009 to 2017, known for his emphasis on unity, progressive policy, and diplomatic engagement. His writing and speeches often explore themes of hope, resilience, and the moral responsibilities of leadership.