Iranian commuters pass a huge anti-US billboard reading in Persian, 'The devil army will be drowned in the Persian Gulf', erected on Enghelab Square in Tehran, on September 14, 2026. Iran's nuclear chief was blocked from attending an annual conference on September 14, at the headquarters of the UN's nuclear agency in Vienna due to opposition from the United States, Iranian state television said. He was due to attend the annual general conference of the International Atomic Energy Agency (IAEA), the UN's nuclear watchdog, which runs until for the week in Austria. (Photo by ATTA KENARE / AFP via Getty Images) /

Iranian commuters pass a huge anti-US billboard reading in Persian, 'The devil army will be drowned in the Persian Gulf', erected on Enghelab Square in Tehran, on September 14, 2026. Iran's nuclear chief was blocked from attending an annual conference on September 14, at the headquarters of the UN's nuclear agency in Vienna due to opposition from the United States, Iranian state television said. He was due to attend the annual general conference of the International Atomic Energy Agency (IAEA), the UN's nuclear watchdog, which runs until for the week in Austria. (Photo by ATTA KENARE / AFP via Getty Images) /

Iranian commuters pass a huge anti-US billboard reading in Persian, 'The devil army will be drowned in the Persian Gulf', erected on Enghelab Square in Tehran, on September 14, 2026. Iran's nuclear chief was blocked from attending an annual conference on September 14, at the headquarters of the UN's nuclear agency in Vienna due to opposition from the United States, Iranian state television said. He was due to attend the annual general conference of the International Atomic Energy Agency (IAEA), the UN's nuclear watchdog, which runs until for the week in Austria. (Photo by ATTA KENARE / AFP via Getty Images) /

Iranian commuters pass a huge anti-US billboard reading in Persian, 'The devil army will be drowned in the Persian Gulf', erected on Enghelab Square in Tehran, on September 14, 2026. Iran's nuclear chief was blocked from attending an annual conference on September 14, at the headquarters of the UN's nuclear agency in Vienna due to opposition from the United States, Iranian state television said. He was due to attend the annual general conference of the International Atomic Energy Agency (IAEA), the UN's nuclear watchdog, which runs until for the week in Austria. (Photo by ATTA KENARE / AFP via Getty Images) /

Iranian commuters pass a huge anti-US billboard reading in Persian, 'The devil army will be drowned in the Persian Gulf', erected on Enghelab Square in Tehran, on September 14, 2026. Iran's nuclear chief was blocked from attending an annual conference on September 14, at the headquarters of the UN's nuclear agency in Vienna due to opposition from the United States, Iranian state television said. He was due to attend the annual general conference of the International Atomic Energy Agency (IAEA), the UN's nuclear watchdog, which runs until for the week in Austria. (Photo by ATTA KENARE / AFP via Getty Images) /

Iranian commuters pass a huge anti-US billboard reading in Persian, 'The devil army will be drowned in the Persian Gulf', erected on Enghelab Square in Tehran, on September 14, 2026. Iran's nuclear chief was blocked from attending an annual conference on September 14, at the headquarters of the UN's nuclear agency in Vienna due to opposition from the United States, Iranian state television said. He was due to attend the annual general conference of the International Atomic Energy Agency (IAEA), the UN's nuclear watchdog, which runs until for the week in Austria. (Photo by ATTA KENARE / AFP via Getty Images) /

TOPSHOT - French tribute artist Fabien Pierrel waits backstage to perform on board a Celine Dion tribute cruise on the Seine river, held to mark the start of the singer's Paris concert residency, in Paris on September 13, 2026. The Canadian singer is performing a series of concerts at the Plenitude Arena between September 12 and October 17, 2026, her first live shows since a hiatus caused by health issues. (Photo by Anne-Christine POUJOULAT / AFP via Getty Images)

TOPSHOT - French tribute artist Fabien Pierrel performs on board a Celine Dion tribute cruise on the Seine river, held to mark the start of the singer's Paris concert residency, in Paris on September 13, 2026. The Canadian singer is performing a series of concerts at the Plenitude Arena between September 12 and October 17, 2026, her first live shows since a hiatus caused by health issues. (Photo by Anne-Christine POUJOULAT / AFP via Getty Images)