could this happen?

I was reading an article on cnn.com about....N. Korea threatens U.S. with 'nuclear war'.....this really scares me that another war could start and this one could be the big one....they can launch a missle at anytime and we the people would not really know until the media says something....I know that their missles wont be able to hit here in Tn but the affects of a missle would hurt the enviroment and cause weather problems, health problems, and even hungar......we need to really pray now that this wont happen.......