He also said that Iran will announce new "big" nuclear achievements in days.

"In the following days, the world will witness the inauguration of several big achievements in nuclear fields," he said.

On Saturday, the visiting Hamas leader Ismail Haniyeh, addressing the crowd in Tehran's Azadi square, congratulated the Iranian nation and government on the occasion of the 33rd anniversary of the victory of the Islamic Revolution and said that Iranians play a role in constructing a bright future for the Palestinians.

On the day, the Islamic Revolution Guards Corps (IRGC) displayed a maquette of the downed US RQ-170 stealth aircraft on Tehran's Azadi square.

In December 2011, Iranian media reported that the Iranian military downed the US RQ-170 stealth aircraft in the eastern part of the country after finding it transgressing the eastern border.

A scale model of the US RQ-170 unmanned spy plane is displayed during a ceremony to mark the 33rd anniversary of the Islamic Revolution, in Tehran's Azadi square, Feb 11, 2012. [Photo/Agencies]