A veteran CIA officer has revealed new details of how the Bush administration built the case for invading Iraq. In an interview with the Washington Post, former CIA officer Tyler Drumheller said he repeatedly warned administration officials over the discredited Iraqi source known as “Curveball.” “Curveball” is the Iraqi expatriate whose claims were used to help build the case Saddam Hussein possessed weapons of mass destruction. Drumheller says he personally removed the paragraph from a draft of Colin Powell’s United Nations speech that claimed Iraq had mobile biological weapons laboratories. But Bush administration officials intervened, and Powell delivered the speech with the bio-lab claim intact.