Page "Diplomatic immunity" Paragraph 15

In modern times, diplomatic immunity continues to provide a means, albeit imperfect, to safeguard diplomatic personnel from any animosity that might arise between nations.

As one article put it: " So why do we agree to a system in which we're dependent on a foreign country's whim before we can prosecute a criminal inside our own borders?

The practical answer is: because we depend on other countries to honor our own diplomats ' immunity just as scrupulously as we honor theirs.