What is diplomatic immunity and what do diplomats do?
THE wife of a US diplomat Anne Sacoolas was granted diplomatic immunity after she was involved in a hit and run crash which left a 19-year-old dead.
Anne claimed immunity on special circumstances. But how does the process work?
This means ambassadors can commit any crime, including murder, and be immune from local law which includes being arrested, prosecuted or being forced to testify in court.
They can still be expelled from the country they are based in.
This immunity became contentious when unarmed PC Yvonne Fletcher, 25, died in April 1984 after shots were fired from inside the Libyan Embassy in London at an anti-Gaddafi protest outside.
He said: "A typical day could involve lobbying on the UN security council resolution on Syria, for example, or it could involve working on a visit for a member of the royal family. It's an incredibly varied workload."
Spies are well known to operate in foreign countries under the cover of working as a "diplomat".
Approximately one third are made up of UK-based British civil servants whose career includes work in the UK and postings overseas.
The remainder are employed by a British diplomatic mission abroad.
The FCO has a network of 270 ministerial posts in 160 countries.
What are diplomatic number plates?
Diplomatic number plates are issued to vehicles used by diplomats in the UK.
They follow a simple pattern and are designed to be instantly recognisable.
They all have three digits, a letter D, and three more digits.
The first three digits tell you what country the diplomat represents, the D is for diplomat and the last three digits are for internal identification.
Administrative staff - non-diplomatic staff who work on diplomatic missions - follow the same format, but with an X instead of a D.
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