White House, Pentagon and North American Aerospace Defense Command officials are refining a list of critical sites in the United States and Canada for active defense against long-range Russian and Chinese cruise missiles, eyeing domestic deployments in a crisis of sophisticated air defense systems such as Patriot and optimal locations for fighter aircraft armed with advanced radar. Col. Kristopher Struve, NORAD vice director of operations, said senior policy makers are considering ways to defend against new, long-range strike weapons. U.S...