The recent push is certainly associated with the various terrorist threats
Furthermore, the terrorism the West faces, is state-sponsored. Neither of its patrons - the Russians and the Radical Arabs - are stupid. If the airlines become secured, they _will_ target the Greyhounds. One need only examine US policy towards (just as one example) Turkey in the last five years, to realize that the Washington Elites are not capable of understanding fundamental problems of statescraft and diplomacy. Under this regime, it is no wonder that our reaction to terror tactics, is to react in a defensive mode - expensive airport security measures, etc, etc. The other side *has already won* the terror war, merely by virtue of having set the agenda, and making us spin in tighter and tighter circles - reacting, not initiating.