Japan chooses F-35 as mainstay fighter jet'

• Japan has chosen the US-made F-35 stealth jet as its next-generation mainstay fighter in a multi-billion dollar deal. 
  
  
• The defence ministry picked the jet made by Lockheed Martin to replace its ageing fleet of F-4 jets over two rivals, the Boeing-made F/A-18 Super Hornet and the Eurofighter Typhoon