Is it even possible to protect a public transit system from terror?

As Friday's attack on the London Tube reminds us, public transit is a plum target for terrorists. That's true around the world. In Israel, Hamas routinely calls for suicide bombers to destroy public buses. The Irish Republican Army regularly attacked the London Underground and British trains during the Troubles. In the 1990s, Algerian extremists from the Armed Islamic Group […]

Source: http://www.washingtonpost.com/blogs/worldviews/wp/2017/09/15/is-it-even-possible-to-protect-a-public-transit-system-from-terror/