Vietnam, Oman mutually waive visas for diplomatic passport holders 29 April 2022 bwsadmin News Travel Vietnam Vietnam and Oman on Thursday sealed a mutual agreement to exempt visas for people holding diplomatic and official passports. Source: VNExpress International, https://e.vnexpress.net/news/travel/vietnam-oman-mutually-waive-visas-for-diplomatic-passport-holders-4457677.html