Martin Griffiths, who is finishing a three-year term as the UN envoy to Yemen, says the 'FSO Safer' tanker issue has been 'an endless round of frustration'.  AP
Martin Griffiths, who is finishing a three-year term as the UN envoy to Yemen, says the 'FSO Safer' tanker issue has been 'an endless round of frustration'.  AP

New UN aid chief rethinks stranded Yemen tanker mission