Gen. John Allen said he was focusing on re-vetting the 16,000 local police stationed throughout the country.

That means another 1,000 recruits are waiting for training.

The slow down comes as the military faces a growing number of insider threats from local forces. Allen said it was a complex issue that requires a comprehensive, combined response from all allies.

He said they were improving the vetting process for new recruits, increasing counterintelligence teams and creating an anonymous insider-threat reporting system.

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