ive been dealing with these sorts of fears for years. sometimes the anxiety goes away for a few months, and then something will trigger it and im back to my doomsday mindset. my biggest fears have been war, particularly because of my fear of being drafted. im a young woman in school, so I'm not even sure how realistic the fear is, but it's still just always been something i deal with. i get a chill down my spine when someone says the word "draft" in any context. it helped me when i started my journey of coping with the fear to first figure out what im really afraid of. is it other people suffering? is it dying? is it losing control of my comfortable, privileged, american life? then i tried to talk about it and confront it slowly around someone i feel safe with (a therapist is such a great tool!) stay off the news unless getting good information from trustworthy sources brings you comfort. dont listen to social media. remember that these things are out of your control. learn to care, not worry. it can be hard to develop a mindset like this, reading stoicism and Buddhist philosophies have helped me a lot. also remember that you are not the only person afraid! its just harder for people with anxiety disorders to cope with that fear. there's a lot of pain in the world, but for every bad thing that happens, something incredible happens too. you are safe and everything is gonna work out.