Questão jurídica principal
Whether testimony of diplomatic mission members was inadmissible or violated fair-trial rights.
Decisão extraída
The diplomats were not compelled to testify; they testified voluntarily, and their statements were usable. The immunity argument did not bar application of the false-testimony warning.
Fundamentação extraída
Under the Vienna Convention, diplomats need not testify, but may do so voluntarily. The sending state may waive immunity, so the risk of prosecution for false testimony is not merely theoretical.