Initially, "experts" dismissed Islamic State's claims that the plane was "destroyed" by terrorists, noting that it was extremely unlikely that IS Sinai possessed the technology and/or the expertise to down a plane flying at cruising altitude. 

But the odd thing about all of the official denials is that it was never entirely clear that ISIS was claiming to have shot the plane down. Indeed, the video - real or fake - doesn't depict a missile strike and in a "statement" released on Wednesday, the group explained that it's under no obligation to reveal precisely how it downed the aircraft. Instead, they simply challenged the world to prove a negative (i.e. "prove we didn't down it") and told Russia to "die in your rage."

Meanwhile, the home office in Raqqa aired a bizarre clip of ISIS militants handing out candy from a bowl, apparently in celebration of their Egyptian brothers' "achievements".  The video then cuts to five guys sitting in the front yard threatening Vladimir Putin with a bowie knife.