This 12-minute video and lesson plan examine how within weeks of the Sept. 11 terror attacks, the U.S. invaded Afghanistan to attack Taliban strongholds. By the end of the year, the mission’s main goal was accomplished. But shifting objectives led to the expansion of a war that became the longest in U.S. history, and is ending in chaos. This lesson asks students to engage in a “Structured Academic Controversy.” The goal of the activity is for students to analyze sources, classify arguments, and engage in discussion.