Parag Khanna

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'One Mega-City, Many Systems': The Evolution of Hong Kong

Cities around the Pearl River Delta have connected to form one giant metaphor about modern China.

Reuters

Needed: An Economic Performance Index for Cities

Better metrics would allow for increased investment in the world's metro areas

Reuters/Mike Segar

Mayor of the World: How Bloomberg Flexes New York's Diplomatic Muscle

Cities, not countries, are increasingly where the foreign policy action is