Every one of the 70-plus warnings sent to airlines, newsrooms and other targets in Europe last week was a hoax. But the harm was real: planes diverted, buildings evacuated, plans disrupted, costs incurred, public confidence eroded, writes Edward Lucas. https://euobserver.com/247845/fake-bomb-warnings-are-hitting-european-aviation-but-the-bigger-threat-came-from-jared-kushner/