Sweden's Myndigheten för samhällsskydd och beredskap (Civil Contingencies Agency) issued a brochure in May 2018 with suggestions for how to prepare for,and react during, a major emergency. Some of the info is Sweden-specific, or but much is just good prepping advice (although rather basic).
[br]Here's their English-language version (8 MB PDF):
whether CRISIS OR WAR COMES
Source: thesurvivalpodcast.com