Mark Obama Ndesandjo also recounts his sporadic but intense encounters with his brother over the years in "Cultures: My Odyssey of Self-Discovery." The self-published book, to be released in February, also tries to set the record straight on some points in the president's bestselling 1995 memoir, "Dreams From My Father."
In that book, Obama seeks to learn more about their father, a mostly absent figure, after learning of his death in a car crash in 1982 at age 46.
When asked how he would describe his relationship with his brother, he said, "Right now it's cold and I think part of the reason is because of my writing. My writing has alienated some people in my family."
Also Read
Ndesandjo, 48, has lived for 12 years in the southern Chinese boomtown of Shenzhen, next door to Hong Kong. He moved there to teach English after losing his job when the US economy cratered following the September 11, 2001, attacks and now works as a consultant.
Some of the book's profits will go to charities for children, including Ndesandjo's own foundation, which uses art to help disadvantaged kids.
In his new book, Ndesandjo recalls alcohol-fueled beatings meted out by his father to his mother. He recounts one incident in which his father held a knife to his mother's throat because she took out a restraining order against him.