On Monday, February 1, Iran will start traditional 10-day celebrations of the anniversary of the 1979 Islamic Revolution, with missile and satellite launches expected.

The festivities, known as the "Decade of Fajr" (Dawn) will culminate on February 11, the date when revolutionary forces, led by the Ayatollah Ruhollah Khomeini, defeated pro-government troops in armed street clashes.

The celebrations traditionally coincide with demonstrations of the country's recent advancements, mainly in the military sphere. This year, Iranian authorities plan to launch three satellites and to hold large-scale military drills, thought to involve missile tests.

In addition, Iran's hard-line leader Mahmound Ahmadinejad is expected to make a statement on the country's recent achievements in uranium enrichment.

During the festivities, opposition forces might again gather for an attempt to revive demonstrations against alleged fraud in June presidential elections. The latest major unrest in the Iranian capital took place late last year during Ashura, a 10-day period of religious ceremonies.