This is the 2120th most frequent Russian word.
столтенберг
"Столтенберг" is a proper noun in Russian, referring to Jens Stoltenberg, a Norwegian politician and NATO Secretary General.
In this sentence, 'Столтенберг' is used as a proper noun referring to Jens Stoltenberg, a specific person.
Столтенберг выступил на пресс-конференции.
Stoltenberg spoke at the press conference.
Here, 'Столтенберг' again refers to the person Jens Stoltenberg and indicates authorship or association with a document.
Эта информация найдена в докладе, подписанном Столтенбергом.
This information is found in the report signed by Stoltenberg.
In this sentence, 'столтенбергское' is a derived adjective referring to a proposal associated with Jens Stoltenberg, denoting authorship or initiative.