The United States could alter its decades-old North American Aerospace Defense Command deal with Canada should its government backtrack on the purchase of 88 Lockheed Martin F-35 fighter jets, the U.S ...

Canada was long expected to buy the F-35 Lightning II to replace its aging CF-18 fighters—but political tensions with America, and a surprising offer from Sweden, have upended these assumptions.

Add Yahoo as a preferred source to see more of our stories on Google. The United States could alter its decades-old North American Aerospace Defense Command deal with Canada should its government ...