I found a link to this dataset in another forum: https://osm.wno-edv-service.de/boundaries/
As I read, we are not supposed to use it as a source for country borders - which is also not convenient anymore due to the download limit. However, I did not understand the alternative that the admin proposes.
In short: How can I download the borders of the world’s nations, including the maritime (territorial waters) boundaries?
Thank you very much for support!