Will WW3 Ever start?

For a long time people have been Tallinn about World War 3 and USA's and North Korea's war threats about launching missiles and shit. If North Korea would launch a nuclear missile to USA then ofcourse USA will do something more.
If there would be a war between North Korea and USA then it would be easy for USA to delete North Korea from the world mao because USA has alot more power tahan North Korea. I think that If there would be a war in the near future then it would problably be between USA and North Korea but i think WW3 will not break out in the near future but If it would then it would start because of USA's and North Korea's war threats