It may just be a massive coincidence that days after the Swedish Government hand out leaflets to its citizens on what to do if a war breaks out, the Americans are doing the same with a document released by the United States Environmental Protection Agency (EPA) explains what you should do in the event of a nuclear attack.
The EPA explain that you shouldn't drink any water from the tap or eat vegetables from home gardens and livestock shouldn't be allowed to graze in potentially contaminated pastures or fields.
If you are outside during a nuclear explosion then cover your nose and mouth and head inside immediately and close all doors and windows and turn off any fans or air conditioners or set them to recirculate. Using a gas mask or dust mask, if available, is also advisable. If you are unable to reach a building, getting inside a vehicle is the next safest option.
Remove your outer clothes and shower or use a wet wipe or clean wet cloth to wipe any skin that was not covered by clothing. Gently blow your nose and gently wipe your eyelids, eyelashes and ears with a clean wet cloth... Put on clean clothes and anything that has been contaminated should be placed into a plastic bag and placed outside.
Finally check official sources via the internet, radio, television and call lines.
I'm sure that it is just strange timing that nations are now warning their citizens on what to do in event of a war but looking around at some of the clownish Worlds leaders at the moment, it might be prudent to bookmark the Government website and lock in the Government radio station frequency on the radio just in case.