US

Iranians celebrate 1979 revolution with rallies

  • Iranians attend an annual rally commemorating the anniversary of the 1979 Islamic revolution, which toppled the late pro-U.S. Shah, Mohammad Reza Pahlavi, in Tehran, Iran, Friday, Feb. 10, 2017. (AP Photo/Vahid Salemi)

    Iranians attend an annual rally commemorating the anniversary of the 1979 Islamic revolution, which toppled the late pro-U.S. Shah, Mohammad Reza Pahlavi, in Tehran, Iran, Friday, Feb. 10, 2017. (AP Photo/Vahid Salemi)  (The Associated Press)

  • Iranians march in an annual rally commemorating the anniversary of the 1979 Islamic revolution, which toppled the late pro-U.S. Shah, Mohammad Reza Pahlavi, in Tehran, Iran, Friday, Feb. 10, 2017. (AP Photo/Vahid Salemi)

    Iranians march in an annual rally commemorating the anniversary of the 1979 Islamic revolution, which toppled the late pro-U.S. Shah, Mohammad Reza Pahlavi, in Tehran, Iran, Friday, Feb. 10, 2017. (AP Photo/Vahid Salemi)  (The Associated Press)

  • Iranians march on a portrait of U.S. President Donald Trump and the picture of U.S. flag in an annual rally commemorating the anniversary of the 1979 Islamic revolution, which toppled the late pro-U.S. Shah, Mohammad Reza Pahlavi, in Tehran, Iran, Friday, Feb. 10, 2017. (AP Photo/Vahid Salemi)

    Iranians march on a portrait of U.S. President Donald Trump and the picture of U.S. flag in an annual rally commemorating the anniversary of the 1979 Islamic revolution, which toppled the late pro-U.S. Shah, Mohammad Reza Pahlavi, in Tehran, Iran, Friday, Feb. 10, 2017. (AP Photo/Vahid Salemi)  (The Associated Press)

Iranians have begun a nationwide celebration to commemorate the 38th anniversary of the 1979 revolution with massive rallies.

Demonstrators in Tehran on Friday chanted traditional slogans against the U.S. and Israel at a time when new U.S. President Donald Trump has already engaged in a war of words with Iran's leadership and put Tehran "on notice" over a recent ballistic missile test.

Among other places, demonstrators marched toward Azadi Square, where President Hassan Rouhani will address the crowd.

State television aired footage of commemorations in Tehran and other cities and towns across the country, many of them in subzero weather.

The rallies commemorate Feb. 11, 1979, when followers of Ayatollah Ruhollah Khomeini ousted the U.S.-backed Shah Reza Pahlavi.