Foreign intervention fragments the conflict.  The use of force by foreign agents fragments conflicts which perpetuates the war. The countries who are likely to and historically have participated in humanitarian intervention are developed Western nations such as the US, UK, Canada and France either unilaterally or under organisational banners such as NATO. In the vast majority of the world, the West is not well-liked and the education systems, media and local history have created negative perceptions of the West as "imperialists" and colonialists. Intervention can often be seen as "neo-colonialism" and the West trying to assert power to change regimes inside other countries around the world. This, combined with the inevitable human cost of the use of force, turns local populations against the intervening forces and allows government forces to cast any resistance movements that cooperate with the intervening forces as traitors to their country.  This is both bad in terms of causing large military opposition from both sides of the conflict against the troops who are intervening, but also fragments the conflict. Resistance movements splinter into those cooperating with the intervening forces and those who aren't. This fractures the resistance movements, reducing their chances of success and reducing the possibility of ceasefires by fragmenting the sides of the conflict making it hard to determine who effectively represents who at the negotiating table.  A good example of this can be seen by the fragmentation of Sunni and Shi'a factions in Iraq post-intervention and the further entrenchment of Sunni opposition to the Shi'a after the Western forces specifically enriched the Shi'a through power and wealth for their cooperation1.  1 "Iraq in Transition: Vortex or Catalyst?" Chatham House 04.-2 n. pag. Web. 7 Jun 2011.