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'US security has never been more worrying'
The former head of US homeland security, Michael Chertoff, has said that in his adult life he has never been more worried about national security in the United States.
鈥淚n the last 50 years, certainly since the fall of the Soviet Union, I have not seen this much sense of foreboding,鈥� he told 91热爆 Hardtalk鈥檚 Stephen Sackur.
Mr Chertoff explained he was concerned about the tenor of debate in the US and elsewhere.
鈥淲e have got to take a serious look at why we have reached a point that we have this level of social fracture,鈥� he said.
