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"Washington, May 9: Amid the growing concerns over terrorism, security and users' privacy, micro-blogging website Twitter has barred US intelligence agencies from accessing a service that sends alerts about unfolding terror attacks and political unrest, the Wall Street Journal reported. The servic.."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ap7am.com/english-news-25643-twitter-blocks-us-intelligence-agencies-from-security-alert-service.html>