If No.Korea act alone as a threat by itself to So. Korea and USA, it would be a short-lived war. The real threat would be China’s support to No. Korea. In my opinion, No. Korea doesn’t have the guts to declare war without the full support of China or Russia. The likelihood of WW 3 is very imminent. I pray the preservation of humanity and civilization will prevail, help us oh Lord.
It is very unlikely that a WWIII is around the corner. Both China and Russia would not want to start any war.