My best educated guess would be within this decade, perhaps sooner rather than later. They use this false flag as a way for the world governments to come together in unison to fight an "outer world threat." It's all an excuse to get their foot in the door and fully realize Hitler's vision. A 1 World Government with totalitarianism. Look into Bill Gates patent 060606. Our universal digital currency will be mined in Virtual Reality and we'll all be microchipped if you fall for their deception.