Yeah if this shit actually happens, and North Korea nukes us, there will be a winter- not the kind we can ski in tho. A nuclear winter.
I really hope it doesn't happen but it just shows how stupid nuclear war is. If North Korea starts something, we will obviously launch some counterstrikes, but so will Russia, China, and basically everyone with nuclear weapons. Within the month, the whole plannet will be wiped out.
A nuclear war could mean the extinction of human life as we know it.