The Kite Runner by Khaled Hosseini.
Partly set in Afghanistan, this bestseller by Khaled Hosseini chronicles the friendship of two young boys who fly kites together as children despite vast differences in their social status. The story follows the devastating betrayal of one boy by the other and how they age and grow apart over time. The Kite Runner shows that while you cannot change your past, you may be able to atone for it. But that atonement is rarely easy or complete. This beautiful novel follows themes of family and friendship within a tragic international context that shows the pain of those swept up by larger political forces and those who escape.