Hey, I am from Germany and I must say, that nobody has told us "To Prepare With 14 Days Of Food and Water"
I have read the
Sources
http://www.sueddeutsche.de/politik/zivilschutzkonzept-so-plant-die-bundesregierung-fuer-katastrophen-und-anschlaege-1.3108096
and it's only says, that they plan to rewrite the plans of civil defense because that plans were written 20 years ago. The modern infrastructure and the resource dependency has changed and we need to update old stuff.