Yunis Owaidah is probably the only Palestinian who's not afraid to admit that he is a "collaborator" with Israel. On the contrary, the 63-year-old father of 12 even boasts of the fact that he has been collaborating with Israel since 1967.

"I've saved the lives of many innocent people," Owaidah said in an interview at his home in the Jerusalem neighborhood of Ras el-Amud. "If saving the lives of innocent civilians means that I'm a traitor, so be it."

Thousands of Palestinians who have made similar confessions over the past three decades have been either killed or ostracized by their families and communities. The last killings occurred in Tulkarm on Monday, when two suspected collaborators in their mid-20s were executed by Fatah gunmen...