Report: World faces 50% chance of WMD attack

The world faces an estimated 50% chance of a nuclear, biological, chemical or radiological attack over the next five years, according to US national-security analysts surveyed for a congressional study released yesterday.

Using a poll of 85 non-proliferation and national-security experts, the report also estimated the risk of attack by weapons of mass destruction at as high as 70% over the coming decade.