It seems that modern warfare is pivoting to utilize many more invisible, silent weapons. This is sensible because there's much less of a paper trail and much less ability for the public to get upset. From cyber attacks to poisoning food, air, medicine and water supplies to electromagnetic weapons to media manipulation to drone surveillance, we are learning that quiet wars are often most strategic. If you don't see it or hear it, is it happening? Yea.
Watch this live demonstration. It's subtle but POWERFUL.