In the United States, there is a sense of "Afghanistan fatigue." While there are certainly valid criticisms that can be levied against U.S. involvement in Afghanistan, a significant amount of social, economic, political, and public health progress has resulted from our engagement and Afghans' own hard work and commitment. But Afghanistan's political progress and social gains are at risk of collapse if the United States chooses to completely disengage from the country. Given the mix of gains and disappointments, how do we establish the correct framework for U.S. engagement with a transitioning Afghanistan in 2020 and beyond?