Morgan Norwood reports on the more than 50 million under winter weather alerts and the rare snowfall in places like Florida and Alabama; Matt Rivers on the ground in Minneapolis as defense officials tell ABC News up to 1500 Army troops could be deployed there; Selina Wang reports on the emergency meeting held by European leaders after President Trump ramps up his efforts to make Greenland part of the U.S.; and more on tonight's broadcast of World News Tonight.
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