How to Save the World
Here's the thing, right? There are two clear underlying causes to all the major problems on earth. The first is overpopulation. Overpopulation means that there are too many people chasing after too many resources - energy, water, land etc. which inevitably leads to conflict. Enough has been written about that to sink a battleship.
Second, there's subjectivity. What's that? It's a lack of objectivity in our approaches to these problems. It's a natural trait of humanity to form into groups, but every group defines itself by a subjective outlook on the world around it. It's thus these groups that enter into conflicts.
Some examples. No objective discussion of the Middle East is possible due to Israel's emotional outlook: thanks to the Holocaust, any criticism or compromise is decried as 'anti-Semitic'. Likewise, Arab nations and Islamic terrorist groups cannot see past the Palestinian question.
The same is true wherever you look. Such is China's emotional attachment to Taiwan and Tibet that any questioning of the situation is condemned as "interference in our internal affairs". Same goes for Serbia, Russia and Kosovo. The dysfunctional tendencies of the UN and EU are all down to questions of national interest. Even the US defines itself these days with reference to 9/11 and any attempt to rationally tackle the greater issues are met with the same response.
So states and other actors are not rational - they are indeed irrational. International relations theory has it exactly wrong.
The only answer is to find a unifying threat or goal, a way to bring all the conflicting groups together into one. And, ironically, overpopulation provides us with that. We are faced with a significant common problem, that of climate change, for which overpopulation is a major cause. Too many people needing too many products, burning too much fuel and cutting down too many trees... you get the picture.
So work together to solve the population crisis and you have an answer to the irrationality that causes conflict and environmental degradation. It's so simple.