@Natasha_Jay thinking out loud but it appears that there is no consensus on what the world's problems actually are.

Some countries might start wars to protect their grip on power, be it it's influence, treasury, or fear to be overrun by competing nations.

Some regimes want to protect a certain way of life, and view outside influence as a corrupting factor. Wealthier and more powerful societies can project culture that overwhelms local traditions.

Much of it seems to revolve around fear.