The document discusses the similarities and differences between the Vietnam War and the war in Afghanistan. Both wars involved guerilla tactics by local fighters against American forces. However, the motivations for US involvement differed - Vietnam was aimed at containing communism while Afghanistan was a response to the 9/11 terrorist attacks. Public opinion in the US also shifted over time, with growing opposition to both wars. The aftermath of both conflicts inspired distrust in the US government and military, though casualties were much higher in Vietnam. While the wars shared some aspects, they also had fundamental differences in reasons for engagement and type of conflict.