Infographic depicting NATO's protective Ballistic Missile Defence umbrella over Europe. Similar protection starting to be implemented in India too.
NATO has initiated its plans to bring all member countries under a Ballistic Missile Defence shield. Titled, 'European Phased Adaptive Approach [E.P.A.A.]', the plan envisages bringing Europe under a protective cover in stages, extending beyond 2020. Interdiction would be performed by the American RIM-161 Standard Missile 3 [SM-3] system, with tracking & guidance provided by multiple satellites & earth-based radars. While presently located on-board ship-based systems, plans are afoot to deploy onshore versions of this hit-to-kill, non-explosive Kinetic Energy based missile.
This illustration, below, depicts deployment plans & functioning of the shield against the threat of an incoming missile.
Click on the image to view it in larger size
source Chicago Tribune via Stars & Stripes
A more descriptive illustration of the interception process
System layout of the SM-3 interceptor
It was announced recently, in India, that the cities of Mumbai & New Delhi, too would soon be brought under a protective Ballistic Missile Defence [BMD] umbrella. India's indigenous BMD shield is pivoted around two interceptor missiles - the Prithvi Air Defence [P.A.D] missile for Exoatmospheric interception & the Advanced Air Defence [A.A.D] missile for Endoatmospheric interception of incoming missiles. In due course of time, more cities of India would be progressively brought under such a protective umbrella, with further improvements being made in the system itself, also.
Godspeed
Related: Indian Missile Programmes - Some Updates