The events in East Genora were too intense to be missed by anybody. Not only did all the polities with a powerful outer space presence notice the bright flash of light and radiation emerging from East Genora, but they had even managed to catch word of the missing prince of human civilization.
Different parties took the news differently.
Those on the fence about their relationship with human civilization were mixed on the event. While they were allies with human civilization, they were not enemies either. The news of one of the strongest warriors of human civilization being nabbed by the light elves did not make the strongest case to pursue peace with human civilization. Especially since his survival was not likely, given how powerful light elves were in their own territory.
The polities that had formed the start of a friendly relationship with human civilization reacted negatively to the event, offering aid to human civilization in whatever manner they could.
