Mads Petersen, owner of Greenland-based startup Arctic Unmanned, sat in a car to keep warm while he tested a small drone at minus 43 degrees Celsius (minus 45 degrees Fahrenheit).

Early in his first administration, President Trump noted the general’s “brilliance and fortitude.” And then the president got ...

Pete Hegseth has revoked Joint Chiefs of Staff Chairman Mark Milley's security detail and clearance and is ordering a review of the retired general's conduct to see whether his rank should be ...