IDPs are especially vulnerable to human trafficking, to forced recruitment, to sexual violence, and to falling prey to landmines or unexploded ordnance. IDPs are far more at risk from explosive ordnance than are settled communities because they do not know which areas or which routes are safe and which are not. Some of the typical needs and protection risks that arise in internal displacement include family separation, loss of documentation, freedom of movement in and out of camps, loss of property, and further exposure to the risk of secondary or onward displacement. The United Nations Guiding Principles on Internal Displacement have not been turned into a legally binding instrument, although many of the Principles reflect customary law. The African Union Convention for the Protection and Assistance of Internally Displaced Persons in Africa (Kampala Convention) is the only continental treaty dedicated to the protection of IDPs.