Former US Defence Secretary Donald Rumsfeld remains largely defiant about the Iraq war, saying in a new book that had Saddam Hussein remained in power, the Middle East would be “far more perilous than it is today,” BBC News said. Rumsfeld, 78, has written an autobiography due out next week. He concedes he could have sent more troops, and that internal US rivalries hampered post-war reconstruction. Leaked excerpts have been published by the Washington Post and New York Times. On the question of troops, he says in the 800-page Known and Unknown: “In retrospect, there may have been times when more troops could have helped.” But he says that if senior military officers had reservations about the size of the invading force, they did not inform him.