"head of consular post" means the consul-general, consul, vice-consul orconsularagent charged by the sendingState with the duty ofleading the consular post;
James Thessin, the chief U.S. agent to the court, admitted that Arizona authorities violated the Vienna Convention on Consular Relations by failing to inform the LaGrands upon arrest on January 7, 1982, of their right to assistance from the German consulate.