An Investigation into Private Military Companies: their ascendancy, their benefits, their limitations, etc.
The Strategic Contractor- Insight into Iraq, Blackwater, and Private Military Companies.
United Kingdom House of Commons Foreign Affairs Report on private military companies. This source is extremely (read: EXTREMELY) valuable in that it provides necessary background (the Growth of the private military sector since the end of the Cold War, The changing nature of the private military sector, Weak states and the threat of international terrorism, British Government engagement of private military and security companies), current legislation regarding these groups in different countries, the legitimate/illegitimate activities of these companies, and the larger debates over accountability, sovereignty, and human rights.