Respectfully, if your assessment of the world situation is that it presents a direct threat to your well being, the question posed in the thread title is answered in the affirmative. Not to say that your scenarios are impossible, but they are very low probability.

Everyone's situation is different, but I am more concerned about prepping for wildfires and earthquakes. Even civil unrest is fairly far down the list. I like to stay informed about world events, but not out of concern for my family's safety. Politics will always be with us, like heart disease and cancer.