In case someone cares, the term 'Schutzmachtvertretung' contains three words, Schutz = protection, Macht = Power/Might and Vertretung = Representation.
Yeah, apparently this refers to https://en.wikipedia.org/wiki/Protecting_power - Sweden is currently (or rather, I guess, was before the Covid pandemic) the protecting power for no less than 10 Western states (Australia, Canada, Denmark, Finland, France, Iceland, Italy, Norway, Spain, USA) in North Korea. And between 1991 and 2001 they were apparently also the protecting power for Germany.