The URL, Back/Forward etc are related to the particular tab you're on. So by changing the topmost thing (the active tab), you're affecting everything below it.
Also, so called intelligence didn't stop France attacks
That's armchair quarterbacking, 20/20 hindsight is always easy. What you do with what you know can be more important than the knowledge itself.
While I understand the false assumption GP is making, what attacks have the monitoring prevented? I'm honestly asking.
Computers can figure out all kinds of problems, except the things in the world that just don't add up.