According to our theory, the delegation of policing can enhance its effectiveness in light of Proxy's advantages in threatening, identifying, and attacking Perpetrators, but it may also cause inefficiency if Defender has limited information about Proxy's choice or cost of policing. Depending on the relative size between these advantages and disadvantages, one of the following four forms of policing may emerge: (i) Defender polices Perpetrators on her own (e.g., Somali counter-piracy operations); (ii) Defender