UN to name Swedish diplomat as new envoy to Yemen UN Security Council has to approve appointment of Hans Grundberg 2021-08-03 03:56:36 UNITED NATIONS UN Secretary General Antonio Guterres will name Swedish diplomat Hans Grundberg as his new Yemen envoy, according to diplomatic sources. The appointment of Grundberg has to be approved by the UN Security Council. If he is approved, Grundberg, who has been the European Union's Ambassador to Yemen since 2019, will replace British diplomat Martin Griffiths. Yemen has been beset by violence and chaos since 2014, when the Houthi rebel group overran much of the country, including the capital, Sana'a. The crisis escalated in 2015 when a Saudi-led coalition launched a devastating air campaign aimed at rolling back Houthi territorial gains.