TEHRAN, Iran — President Mahmoud Ahmadinejad claimed today that Iran has produced its first batch of uranium enriched to a higher level, saying his country will not be bullied by the West into curtailing its nuclear program a day after the U.S. imposed new sanctions.

Ahmadinejad reiterated to hundreds of thousands of cheering Iranians on the anniversary of the 1979 foundation of the Islamic republic that the country was now a "nuclear state," an announcement he's made before. He insisted that Iran had no intention of building nuclear weapons.

It was not clear how much enriched material had actually been produced just two days after the process was announced to have started.

The United States and some of its allies accuse Tehran of using its civilian nuclear program as a cover to build nuclear weapons but Tehran denies the charge, saying the program is just geared toward generating electricity.

Enriching uranium produces fuel for a nuclear power plants but can also be used to create material for atomic weapons if enriched further to 90 percent or more.

Iran announced Tuesday it was beginning the process of enriching its uranium stockpile to a higher level.