The trend towards war is down.
But as we run out of non-renewable resources over the next 100 years, global warming won't matter.
The loss of pesticides, fertilizers, stainless steel, etc. all will limit our growth, lead to population declines, and possibly pretty terrible war (we have a lot of ugly stuff we agree not to use but as history shows, we will use during total war).
80 years from now, we may be at 12 billion and 80% likely to still be rising.
200 years from now, the earth is more likely to have a population of 3 billion than 20 billion. To avoid that we'll have to invent a lot of new technologies really fast as we hit multiple limits. Consumption of non-renewable resources by a population of 12 billion will be terrific.
I think most of the breakdown happens after I die. But I think we do have a breakdown- things have gotten visibly more brittle over the last 20 years. There's not as much slack in the system as their used to be. Which is fine until you have a problem.