english: And I spent countless hours in presidential libraries trying to understand how the environment had shaped the leaders, the moves that they made, and then the impact of those moves beyond their tenure.
non_english: Ik bracht vele uren door in presidentiële bibliotheken, en probeerde te begrijpen hoe de omgeving de leiders had gevormd, welke stappen ze ondernamen, en welke impact die nog hadden nadat hun ambtstermijn was verstreken.