Demonstrators carry the Iranian flag as they gather for a rally marking the 41st anniversary of the Islamic Revolution, in Tehran, Iran, Feb. 11, 2020. Photo: Nazanin Tabatabaee / WANA (West Asia News Agency) via Reuters.

Tens of thousands of Iranians poured into the streets of Tehran and other cities on Tuesday morning to commemorate the 41st anniversary of the Islamic Revolution, against a backdrop of escalating tensions with the United States.

State TV showed video footage of rallies in at least half a dozen cities outside the capital, including Mashhad, Ahvaz and Kerman, with people holding signs that read, “Death to America” and “Death to Israel.”

Iran almost got into a full-blown conflict with the US last month after an American drone strike killed top Iranian military commander Qassem Soleimani in Baghdad on Jan. 3, prompting Iran to retaliate with a missile barrage against a US base in Iraq days later.

Tensions spiked between Iran and the US after President Donald Trump withdrew from a multilateral nuclear deal with Iran in 2018 and reimposed sanctions in a bid to pressure Tehran to negotiate over its ballistic missile program and ties with regional proxy groups.

Missiles were put on display as part of the anniversary celebrations, according to the Tasnim news agency. Iran’s state TV showed archival footage of missile launches and underground missile storage facilities as part of its anniversary coverage.

The missile program is not intended for attacks on neighboring countries, Iranian President Hassan Rouhani claimed on Monday.