Countering the reach of the global jihad within networked diasporas is a global security priority. Police and intelligence services worldwide—especially in “Global Cities” with international political and economic importance and transnational connections—must develop relationships with diaspora communities. These efforts must build upon community policing and develop the cultural understanding and community trust required to recognize the emergence of extremist cells, radicalization, efforts to recruit terrorists, and efforts to exploit criminal enterprises or gangs to further terrorist activities. These efforts need to be linked to develop the intelligence needed to combat a global networked threat. This requires more than “information-sharing” and co-operation, it requires a multi-lateral framework for the “co-production” of intelligence so police and intelligence services can recognize global interactions with local impact and local activity with global reach. Link—>