Obvious conflicts.

The global warming which increases the world temperature, will absolutely affect and harm water resources and finally food supply. And if we could not manage well this scenario from the beginning
it will eventually trigger conflicts, even wars among nations.
According to UNEP study, the most critical areas will cover almost all African continent, Mediteranian, and Sahel.
The climate change is just the beginning, and it will create a snowballing effects, and will culminate by the end of XXX century. We already witnessed long drought, shortage of water supply, soil degradedness, raising sea level, big flood, hurricanes, deadly viruses, smashed harvest, and lot more catastrophes. and all of them will encounter us more frequently shortly, whether we like it or not. The hurricanes, floods, and raising sea level are still threaten along the shorelines of China, India, and the US.
Whenever the Himalaya snow melt, it will cause the disappearance of water resources, which will affect the water supply in India, Bangladesh, and Pakistan. Not to mention the climate change which affect and create hot spots and possible to destroy the tropical forests in Amazone, Congo, and Southeastasia.
All of them have and will create conflicts between regions, provinces, even nations. So, be prepared for the worst day that will come, sooner or later. Take care !