Who are the main characters and what is the conflict in The Kite Runner by Khaled Hosseini?

The two main characters in Khaled Hosseini's The
Kite Runner are Amir, the protagonist and narrator, and his father, Baba.
Another primary character is Hassan, a servant and friend of Amir. The setting of the
first part of the novel is Kabul, Afghanistan, where Baba is a wealthy businessman. Baba
and Amir later move to California following the Russian invasion of their country, which
involves one of the many conflicts found in the story.

One
of the major conflicts arises between Amir and Hassan. Amir is never able to fully
accept Hassan--who is of the lowly ethnic group, the Hazara--as a friend or equal. Amir
later commits several transgressions against Hassan for which he is forever haunted;
Amir's search for atonement for his acts is a major theme of the novel. Another conflict
comes in the relationship between Amir and Baba. Baba is ashamed of his young son, who
prefers literary pursuits over the physical, athletic traits that Baba so desires. As
Amir grows into an adult, the two manage to resolve most of their differences. A third
major conflict occurs when Amir returns to Afghanistan to search for Hassan's son, who
Amir discovers is also his half-nephew. Amir's dangerous mission is successful, yet more
conlficts arise during his stay in Afghanistan and Pakistan, and when he returns to
California with Sohrab, his nephew.