The 2005 Quadrennial Defense Review is set to take up what the White House calls one of the greatest security challenges facing the United States -- the prospect of weapons of mass destruction in the hands of terrorists or hostile states. The second of four senior-level "roundtable" discussions by the QDR's "capabilities mix" panel will convene April 26 to examine the military equipment, organizations and skills needed to deal with a range of scenarios -- from a collapsing nuclear-armed state...