A dogfight over software is intensifying as the Pentagon reaffirmed that it will not share with partner countries the sensitive code that controls Lockheed Martin's F-35 radar-evading jet fighter, according to an article published by Reuters. Britain, which funded about $2 billion of the F-35, is among eight countries that co-financed the system. Nonetheless, no country will receive the source code or the vital electronics that control everything from weapons integration to radar to flight dynamics, according to the article. The jet, known as the Joint Strike Fighter, can switch between air-to-ground and air-to-air missions in mid-flight, thanks to some...