If you followed the mainstream news for the Iran/Israel escalation, then you might have been terrified about ww3, fearmongering is something they do well.
I'm here to suggest a quite crazy channel for leftist to follow. military industrial economics, channel Perun.
Not because MIC good, but because it's a channel that grants a very well versed way to understanding modern conflicts. No, it's not perfect, but it's way better than cnn or some shit
edit!: it's also one of the reasons I'm less afraid of nuclear escalation in the world!