Official Invitation Letter Applications Open Participants may apply to receive an Official Invitation Letter for the Youth Diplomatic Summit Budapest, Hungary 2026 , taking place from 07–09 November 2026. Upon completing the application and payment process, applicants will receive an instant downloadable signed and stamped invitation letter, along with visa support and guidance, a complete visa documentation checklist, and the option to have the invitation letter sent directly to the embassy upon request. Applicants may also choose to upgrade to a full participation package at a later stage.