US official says security threat harder to tackle
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US authorities are having a harder time detecting terrorism threats on American soil, top US officials said on Wednesday, more than nine years after the September 11 attacks thrust the United States into a global struggle with Islamist militancy.
The officials, including Homeland Security Secretary Janet Napolitano and FBI Director Robert Mueller, said at a Senate hearing that al-Qaeda and its affiliates are increasingly plotting small-scale attacks on the United States that can be carried out with greater frequency against a broader range of targets. (Reuters)
