Fear of Nuclear War: Is the End Near?

Tw of current events. Oh boy. Ive been having this fear for the longest time now and its coming to fruition. As i write, and as you probably know, the country of Ukraine is being completely and totally invaded by Russia and Belarus. for years now, Ive been increasingly paranoid about the world as we know it ending, with nuclear fire. Ive even made emergency preparations in the event of a ballistic missile attack, but my gosh, I want to calm down. I am so scared to sleep tonight. My heart is shattered that despite it being an awful few years, it manages to get worse for all of us. Now a full scale conflict has erupted... and I feel that this is truly the end.