Russia claims undercover U.S. agents brought down their new Superjet: Extraordinary claim about crash which killed 45

State’s GRU military intelligence source says Russians areĀ investigating theory crash was ‘industrial sabotage
Aircraft was on a demonstration flight aimed at securing lucrative orders when it slammed into a mountain killing all 45 passengers and crew
Russian intelligence official claims US have ‘special technology’ capable of jamming signals from the ground or causing systems to malfunction

Spy sources in Moscow today made the astonishing claim that a US undercover operation may have sabotaged [...]