In the book "The Kite Runner" Baba is diagnosed with lung cancer. His decision is to refuse treatment.
Baba sold his car to pay for Hassan's lip surgery in "The Kite Runner."
An orphanage
He dies of cancer in America.
Baba's name is never given, and neither is Baba's father's (Amir's grandfather). They are only ever referred to as 'Baba', and Amir's grandfather or Baba's father.
Stupid - For not telling Baba why he left.
the kite runner
The brass knuckles symbolize Baba in "The Kite Runner." They represent his strength, protectiveness, and willingness to fight for what is right. Baba's gift of the brass knuckles to Amir is a physical representation of his desire to instill these qualities in his son.
In "The Kite Runner" by Khaled Hosseini, Baba does not sleep with Sanaubar. Sanaubar is actually the mother of Hassan, Baba's servant and Amir's half-brother. There is a strained relationship between Baba and Sanaubar due to her abandoning Hassan when he was young.
Baba doesn't like America. His political views cause tension.
In "The Kite Runner," Amir's real father is Baba, who is a wealthy and influential man in Kabul. Hassan's father, named Ali, works as a servant for Baba's family and is not related to Amir biologically.
Baba fixes Hassan's lip in Chapter 14 of "The Kite Runner." It happens after Hassan's assault by Assef, where Baba notices Hassan’s injuries and takes him to a doctor for treatment before fixing his lip himself.