I heard that before Jesus returns that Jews will be returning to faith in Jesus in large numbers. I don't really know if that is happening. In any event, these world events are very disheartening and frightening.
Actually, before the return of Christ, many Jews will return to their faith as a result of renewed emphasis on the 3rd temple which will be rebuilt. Much of it is preconstructed today, but the Dome of the Rock mosque sits on one corner of the 2nd Temple mount and is therefore blocking the reconstruction.
Christians know that if the rebuilding of the 3rd temple begins, the Tribulation era will certainly soon follow.