If we consider past global conflicts like WW2 they were often preceded by global economic collapse. Once people starve, things become unstable and hawkish hardliners may step in to replace more moderate doves. War is then a way to deflect from leadership failures. Hence WW3.
I have no idea how it would be triggered, but do you people think this global economic collapse has set the stage for global war?
disclaimer: no politics intended!
o.m.g… is OP that unable?
No.
I do not change the question, I just tell my answer.
Tldr all the rest for good.