A big question aroused by the conflicts in Darfur is whether the international community has any responsibility to intervene at any point. For every good question there is not only a good answer but good boundaries in the answer. The violence and terror of Darfur has sometimes been called genocide but it's a switch situation. Sometimes the violence emerges, then is stopped a while with a treaty, a couple years later it starts all over again. This ongoing trail of crumbs of destruction keeps amounting to something greater in severity. Ultimately this can lead to the complete destruction of any type of human habitat. By the word human habitat I mean that it may not become a place hospitable to live in.
Now for the big answer, in my opinion, is that at any absolute point can the international community intervene in Darfur.
They may only intervene if the circumstance and the outcome is a sure way for the health of people and chance of survival, increases. Every issue that the world has faced comes to the point of absolute chaos, and usually what comes after the chaos is the miracle of two opposing fronts Seeing Eye to eye. In history there is only one way for peace of two enemies to resolve conflicts, and that is mediation. Who are the mediators? They are people, countries that have already experienced this in some way or form. Common ideas and the fusion of ideal thoughts has become the key to showing two opposites a common ground.
Let's suppose that the situation in Darfur is a first time conflict were the violence just raged and the beliefs were so hardwired into their DNA that the "believers" were at nothing going to get nothing less than what they specifically ask for. That is in the border of impossibility just because both opposing forces have those same locomotive personalities. In a general situation it is hard to get to a person who is just plain stubborn. Sometimes appealing to their likings will change their minds, or sometimes the action of another will force to forget. In Darfur the force to forget is needed desperately. The situation is not under control by just the native government, and it does not matter how many pills a person takes to believe that it is, an exterior power is needed desperately. These people at this moment value concern more than gold. The native government does not have the guts to see the tragedies that the conflicts have caused. And since every other country has seen what has happened and not them, the real experts to solving this violence problem are the international community that has been keeping watch since day one. Any move that a country makes, the country next to it is watching.
It is just human nature to nose around in other people's business, and this trait needs to become a necessity not just for bordering powers but by powers that have extreme economical, military influence. For any situation in a conflict a line of tolerance needs to be built, and this line of tolerance is the kick start for the nosing around trait. At this point countries should be getting a little bit more involved than just poking their head in through another's countries doorway and saying, "Hey what are you doing in here." That line of tolerance was crossed in Darfur in 1983 when their second civil war was fought with same opponents same ideals.