President Bush last month signed an intelligence order directing the CIA to undertake its most sweeping and lethal covert action since the founding of the agency in 1947, explicitly calling for the destruction of Osama bin Laden and his worldwide al Qaeda network, according to senior government officials. Bush's order, called an intelligence "finding," instructs the agency to attack bin Laden's communications, security apparatus and infrastructure, senior government officials said. U.S. intelligence has identified new and important specific weaknesses in the bin Laden organization that are not publicly known, and these vulnerabilities will be the focus of the lethal covert...