How to Prevent Terrorism From Megacity Slums

International terrorists in a megacity slum could threaten any city, anywhere in the world, It is vital to prevent this happening.

A megacity is a metropolitan area with a total population in excess of ten million people.

The largest megacity today is the Tokyo-Yokohama metro area, Japan, home to 37 million people, followed by the Indonesian capital, Jakarta (28 million), Seoul-Incheon, S Korea (25 million), Shanghai, China (23 million), Delhi, India (22 million) and Manila, Philippines (12 million).