Iran, Britain, France and Germany have agreed to hold talks on Tehran's nuclear programme, Iran's semi-official Tasnim news agency reported on Sunday, following warnings by the three European countries that failure to resume negotiations would lead to international sanctions being reimposed on Iran.

"The principle of talks has been agreed upon, but consultations are continuing on the time and place of the talks.

The country in which the talks could be held next week has not been finalised," Tasnim reported, quoting a source informed with the matter.

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