Lloyd's have released a study showing what the impact would be of 18 potential threats to the economic output of 301 major cities

The study uses projects how much GDP of each city is at risk from threats, broken down into manmade, natural and emerging

1. Emerging economies ... their cities often highly exposed to single natural catastrophes.

2. Manmade risks such as market crash, power outages and nuclear accidents ... A market crash is the greatest economic vulnerability

3. New or emerging risks, such as cyber-attack, are also increasingly significant.

(more here)

Asian cities make the top of the most risky ...

  • Taipei,
  • Tokyo second
  • Seoul
  • Manila
  • then at 5, New York

(more here also)