Iran says it will prevent conductor Daniel Barenboim performing at a concert in Tehran.
According to a report by German newspaper Der Spiegel, the Iranian culture minster will cancel the concert because Mr Barenboim is an Israeli citizen.
A spokesman for the ministry was reported as saying that "Iran does not recognise the Zionist regime and will not co-operate with artists of this regime".
Plans for the concert, with Mr Barenboim leading the Berlin Philharmonic orchestra were announced earlier this week. It is due to take place in the Iranian capital later this year, possibly during German Chancellor Angela Merkel’s state visit in October.
