Begin from 2002, the cia and the fbi the more significant to strengthen the monitoring and fight for Chinese students work, trying to recruit personnel as agents from right.

从2002年开始，中情局和联邦调查局更显著加强了监控和争取中国留学生的工作，力图从中招募合适人员作为特工。

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Officially, the cia will generally before recruit candidates secretly investigation to see if he has become an agent of the basic quality.

正式招募之前，中情局一般会对候选人暗中考察，看他是否具备成为一名特工的基本素质。

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"Just as the military cannot hire people off the street to become instant majors and lieutenant colonels, it takes years for the CIA to recruit, train and deploy experienced case officers, " he wrote.

CNN: Tenet furious over scathing CIA report

There is a risk that the attack will prompt CIA officials to implement new security measures that could restrict their ability to recruit new sources in the future.

NPR: Risky Business: U.S. Must Rely On Foreign Spies