Iran has been trying to reflag its ships, using countries such as Tuvalu, to bypass Western sanctions aimed at choking off its oil exports.
In mid-August, Tanzania announced it was de-registering 36 Iranian vessels and that it was dropping the Dubai-based shipping agent who flagged them without its knowledge.
1910 GMT: Media Watch. I have been interviewed at length tonight by the radio service of State broadcaster IRIB about sanctions and Iran's nuclear programme.
If anyone hears the broadcast version of the remarks, please let me know.