R to @AJEnglish: Martin Griffiths, the former UN under-secretary-general for humanitarian affairs, has told Al Jazeera that Iran’s reluctance to attend talks in Switzerland is a fa

Martin Griffiths, the former UN under-secretary-general for humanitarian affairs, has told Al Jazeera that Iran’s reluctance to attend talks in Switzerland is a familiar negotiating tactic that can add pressure on the diplomatic process. 🔴 LIVE updates