TEHRAN, IRAN (AFP) - Iran's President Mahmoud Ahmadinejad said Sunday that talks in Geneva on his country's nuclear programme had been positive and he saw no obstacle to continuing discussions with world powers.

"We have a positive opinion of the meeting in Geneva," Ahmadinejad told state television.

"I don't think there will be problems in the coming negotiations. If some people want to create problems, they will not succeed, and if they succeed, they will hurt only themselves," said Ahmadinejad when asked about comments earlier by US Secretary of State Hillary Clinton.

Clinton warned Tehran that the international community "will not wait indefinitely" for the Islamic republic to meet its obligations on its disputed nuclear programme.

"The international community will not wait indefinitely for evidence that Iran is prepared to live up to its international obligations," Clinton said after talks in London with British Foreign Secretary David Miliband.

She said the talks on Iran's nuclear programme on October 1, involving the 5+1 group of Britain, China, France, Germany, Russia and the US, were a "constructive beginning" but she said they "must be followed by action".

However, just days ahead of the Geneva talks, Iran angered global powers when it revealed to the International Atomic Energy Agency (IAEA) that it was building a second uranium enrichment plant near the holy city of Qom.

The next stage in the talks comes on October 19, when officials from Iran, the United States, Russia, France and the IAEA are to meet in Vienna to work out the deals under which Tehran has said it is ready to buy 20 percent pure uranium from abroad.