Martin Griffith, Special Envoy of the Secretary-General for Yemen. UN Special Envoy for Yemen arrives in Sanaa On May 30, 2021 122 Share YemenExtra The Special Envoy of the Secretary-General of the United Nations to Yemen, Martin Griffiths, arrived on Sunday at Sanaa International Airport. Continue Reading 122 Share FacebookTwitterGoogle+ReddItWhatsAppPinterestEmailLinkedinTumblrTelegramPrint