"IN NOVEMBER 1999, the United Nations Security Council authorized sending peacekeepers to the Democratic Republic of Congo. Since then, despite the growth of the UN force to more than 18,000 personnel, at a cost of more than $1 billion a year, violence and turmoil have killed millions more Congolese. Of course, some things haven’t helped, like the Pakistani peacekeepers who rearmed, in return for gold, the militia they were supposed to be disarming; or the Indian troops who reportedly traded arms for ivory from the rebels and bought dope from them in the bargain; or the contingent of UN troops who failed to stop a massacre of 150 people taking place less than a mile away. Even before that tragedy last December, Congolese had rioted outside one UN compound over the mission’s ineffectiveness, and the Spanish general newly appointed to command the UN force had resigned in a huff over weak political support and feeble military resources. And so it goes with all but the most routine UN peacekeeping missions, which are effective only to the extent that their host combatants allow."(The Atlantic)
One must recognize the difference between peacekeeping operation and peacemaking operations. UN troops are pretty fucking useless in peacemaking operation and barely tolerable for peacekeeping op. If your goal is peacemaking, get first world army or hire some mercenaries that actually know what they are doing.