Because that is an escalation that nobody wants, for now. Even piracy was tolerated for a while until it became economically too disturbing. I don't think it al

Because that is an escalation that nobody wants, for now. Even piracy was tolerated for a while until it became economically too disturbing. I don't think it all disappeared but it is not that bothersome. If anybody started threatening commercial civilian flight, countries would fall on them like bricks. Quarantine for a few months was devastating on many fronts. Now, think if all flights were grounded for months...