The Question and Answer section for The Kite Runner is a great resource to ask questions, find answers, and discuss the novel.
Amir spots track marks (drug needles) on his arms.
Ali and Hassan left Amir's home, which caused Baba great grief. Ali was later killed by a land mine. Hassan later moved his family into Baba's old house, he and his wife were killed by the Taliban. Sohrab was taken and missing.
The flight from Kabul?