How? Likely bribes. No way around it in parts of the world. Have to grease the wheels of diplomacy.
That way, the politicians can look down on other governments for the lack of sophistication in their corruption.
This is an interesting sci-fi premise, but hard to imagine.
You're describing people without a civics education. Bribes (direct or promised after term), campaign contributions (direct and via PACs) and lobbying (direct and paid) are categorically distinct.
Source? (My search keeps turning up Tip O'Neill.)
https://www.americanprogress.org/article/sen-ted-cruzs-no-ta...
https://www.skadden.com/insights/publications/2024/07/us-sup...
I heard Google and Microsoft spent bilions on EU lobby.