David Isenberg is an independent, Washington-D.C. based analyst and writer on military, foreign policy, national and international security issues and the author of Shadow Force: Private Security Contractors in Iraq. He is an expert in U.S. defense policy , WMD proliferation, terrorism, homeland security, peace operations, the intelligence community, international arms trade, small arms proliferation, private military companies, biological weapons, and general arms control issues.

Isenberg’s blog, The PMSC Observer, focuses on private military and security contracting. He also blogs regularly at the Huffington Post.