NSA surveillance sparks talk of nat ional internets.

Just imagine the "network of all networks," the globe-spanning Internet, becoming a loose web of tightly guarded, nearly impermeable regional or even national networks. It seems antithetical to the mythology surrounding the Internet's power and purpose. But ongoing revelations about the extensive surveillance activities of the U.S. National Security Agency (NSA) are pushing countries like Germany and Brazil to take concrete steps in that direction. [ABSTRACT FROM AUTHOR]