Link for your cite please.
His ancestory
http://www.wargs.com/political/obama.html
or
http://www.suntimes.com/images/cds/MP3/obamatree.pdf
See any Arabic names in there?
Barack Obama’s grandfather was Hussein Onyango Obama (Grandfather). He was born about 1895 and died in 1979. He worked for the British colonial government and was a prominent and wealthy farmer.
Grandfather lived for a time in Zanzibar, where he converted from Christianity to Islam. He was one of the first Muslim converts in his village.
Grandfather, for whom Obama was given the middle name, Hussein, was “fiercely devoted to Islam.” He had at least 3 wives: Helima, who had no children, Akuma who gave birth to Sarah Obama, Barack Hussein Obama, Sr. and Auma Obama.
“What your grandfather respected was strength — discipline.” Obama quoted his grandmother, Sarah, as telling him. “This is also why he rejected the Christian religion.
“For a brief time, he converted, and even changed his name to Johnson. But he could not understand such ideas as mercy towards your enemies, or that this man Jesus could wash away a man’s sins.”
“To your grandfather, this was foolish sentiment, something to comfort women,” she added. “And so he converted to Islam — he thought its practices conformed more closely to his beliefs.”
Grandfather’s third wife Sarah, is the one often referred to by Obama as his “grandmother.” She is not a blood relative and describes herself as a lifelong Muslim. “I am a strong believer of the Islamic faith,” she said.
Sarah was the primary caregiver for Senior after his mother, Akuma, left the family when her children were still young.