A British government report made public yesterday provides new information showing that al Qaeda terrorists had contacts with Iraqi intelligence in developing chemical arms and that the group worked with a Pakistani nuclear weapons scientist. The special report by former top civil servant Robin Butler on British prewar intelligence found gaps in reporting on Iraq's weapons and also disclosed new details of terrorist activities of al Qaeda associate Abu Musab Zarqawi, who is leading attacks in post-Saddam Hussein Iraq. On al Qaeda's efforts to obtain nuclear arms, the report stated that Osama bin Laden set up a laboratory in Afghanistan...