Yes.
When a diplomat is expelled from the country that he/she is working in, the diplomat is declared persona non grata
Yes
Chief Diplomat
If the foreign citizen is in the US and violates a treaty of the US, he/she can be brought in a US court. Otherwise, if the citizen is in another country, the court of that country is responsible for that violation.
Yes a Zambian citizen can marry a Us citizen and work in the us because the zambian citizen can obtain a citizenship by marriage and automatically become a citizen of us and is allowed and qualified to work there.
The US Secretary of State and the rest of the US Foreign Service (diplomat core) are public officials directly running and organizing US foreign policy.
The US Secretary of State and the rest of the US Foreign Service (diplomat core) are public officials directly running and organizing US foreign policy.
The US Secretary of State and the rest of the US Foreign Service (diplomat core) are public officials directly running and organizing US foreign policy.
I have no answer - I am asking you
Yes, a UK citizen can work in the US with the appropriate visa or work authorization.
Yes, a US citizen can work in Germany with the appropriate visa and work permit.