People stand next to a model missile and a nuclear enrichment centrifuges during a rally outside the former US embassy in Tehran as Iranians mark the 46th anniversary of the start of the Iran hostage crisis, on November 4, 2025. In 1979, 52 embassy staff were held hostage for 444 days by Iranian students, who demanded that Washington hand over Iran's recently toppled shah, who was being treated in the United States for cancer.