Spanning for 844 km, the Mali–Niger boundary is based on a series of French colonial documents. The Malian and Nigerien governments established a joint boundary commission in 1962, and the commission has met several times to establish the preliminary measures that need to be taken to complete a joint demarcation of the frontier. There are no disputes concerning the border, and the two countries share generally stable relations. Mali and Niger have cooperated with each other to combat the increased presence of terrorism and ethnic rebel groups in the region.