This is good region for discussion. Many members will be able to post pictures of weapons used in this area. I have a few example from these lands. Again this is an area that has a shared material culture. So it is not always possible to say that a weapon is exclusive to one group of people over a vast region. I will try to post some pictures over the weekend. This link is a good source of information on this region.
http://en.wikipedia.org/wiki/Ilemi_Triangle