Iran and six world powers will hold talks on Tehran's disputed nuclear program in Geneva on Jan. 18, the European Union said on Wednesday. The six powers - the United States, China, Russia, Britain, France and Germany - and Iran 'will continue negotiations in Geneva on 18 January with a view to making further progress towards a long-term comprehensive solution on the nuclear issue,' an EU statement said. 'The meeting will be at political directors' level, chaired by EU Political Director Helga Schmid,' it said.