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Turkey has built close economic ties with Iran and has been at odds with Washington over the best way to get Tehran to halt its nuclear program, arguing for a diplomatic solution to the standoff instead of sanctions.

Turkey, however, has also decided to host a NATO defense shield radar that would warn of any Iranian ballistic missiles in the region.

Iran and six world powers - the U.S., Britain, France, Russia, China and Germany - have agreed to meet April 13 for new nuclear talks, but no decision has been made on the venue.

• From wire dispatches and staff reports