Daniel Domscheit-Berg, the former WikiLeaks spokesman who left the secret-spilling website after a bitter dispute with Assange, writes about his euphoria at the website’s spectacular rise as well as his disillusionment with a leader he describes as delusional and power-crazed. He said one of his motives for writing the book was that he wanted to clarify the events that led to the falling-out. “We need to set the record straight before Assange turns into a cult, a pop phenomenon,” Domscheit-Berg told reporters in Berlin on Thursday at the launch of his book. The Associated Press reviewed a German-language copy of “Inside WikiLeaks: My Time with Julian Assange at the World’s Most Dangerous website” ahead of its release Friday in 16 countries.