Longer range, more intractable intelligence challenges are addressed by grouping analytic and operational personnel from concerned agencies into close-knit functional units. Examples at both the national and multinational levels include counter-terrorism (e.g., Singapore counter-terrorism and ASEAN counter-terrorism training center, transnational crime and drug enforcement (e.g., Interpol) and verification of compliance with nonproliferation treaties (e.g., Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO, to be established)).
