MOSCOW, September 9 (RIA Novosti) - Iran presented proposals to six world powers for talks on "global issues" on Wednesday, amid Western demands that it halt nuclear activities, Press TV reported.

Foreign Minister Manouchehr Mottaki presented the package to ambassadors from China, France, Germany, Russia, Switzerland, which represents the United States, and Britain, at a ceremony attended by journalists, the English-language official channel reported.

The details of the proposals have not been made available.

U.S. President Barack Obama said in July that Tehran must respond to the six international negotiators' proposal to halt nuclear activities in exchange for trade incentives by the end of September. France and Germany said they would seek harsher sanctions for the Islamic Republic if it turned down the offer.

Iran has been under pressure to halt uranium enrichment, needed both for electricity generation and weapons production. Tehran has repeatedly rejected the demand, insisting it is pursuing a purely civilian program.

President Mahmoud Ahmadinejad said on Monday he was prepared to discuss international issues with Obama, but ruled out negotiations on the disputed nuclear program, saying the discussion was "finished," that he would not debate Tehran's legitimate rights.