COLUMBIA, Mo. -- A monster winter storm took aim at a third of the nation Monday, threatening to lay a potentially deadly path of heavy snow and ice from the Rockies to New England, followed by a wave of bitter, bone-rattling cold that could affect tens of millions of people. Cities including St. Louis, Kansas City and Milwaukee could be hardest hit, with expected midweek snowfalls of up to 2 feet and drifts piled 5 to 10 feet. Even hardy Chicago could be in for its third-worst blizzard since record-keeping began. "I wouldn't want to be on the road in...