A lot of strife is caused by scarcity of resources. Forgive me because I can't remember the name of the source, but I read something very interesting sometime back about the Syrian civil war ultimately being caused by drought and a battle for water. And it is well known that parts of southern Iraq, for example, are simply becoming uninhabitable.
A major factor is heat plus humidity is a big problem for humans. How many times do we hear that we in this country when we get so called heatwaves find it so uncomfortable because of the humidity - 26 degrees plus high humidity feels worse than 34 degrees and low humidity. The body's ability to sweat and deal with the heat decreases as the atmosphere absorbs more moisture, and warmer temperatures mean more moisture is held. Now try to imagine being a poor family in southern Iraq for example - temperatures are now routinely reaching over 50 degrees, along with that higher humidity. No air con, no insulation from the relentless, killing heat. Would you stay? It's not sustainable.
We have also seen the weather chaos in Europe, in North America, in Asia the last few years. How long is it before all these people start pushing northwards? Glaciers are melting in the Himalayas which are the water sources for people thousands of miles away in the Bay of Bengal. What will happen when these glaciers finish retreating?
It's not enough for developed countries to close the borders without looking at the reason people are moving, and factoring in how many more of them will need and want to. But it doesn't seem as though people, including governments, are prepared to acknowledge that. Refugees and migrants will keep coming unless life improves where they are. But at the same time, the risk is they will overwhelm the countries they are trying to get to.
Anyway, back to Kemi and Laura...