The F-35 fighter jet is the most successful fifth-generation program, but geopolitical tensions among NATO states make it less attractive.

Defense contracting giant Lockheed Martin was left in the dust by Boeing's exceptional sixth-generation aircraft: the F-47.

Now, however, nations are moving ahead with the sixth generation of combat jets. In the past few months, China has flown its ...

Frank Kendall, the former Secretary of the Air Force, said he doubts US allies will be lining up to buy F-47s given its costs ...