He made the promise in his inauguration speech, and this was later endorsed by a joint declaration of the European Union and its Member States with the United States on 15 June last year.
Preşedintele a făcut promisiunea în discursul său inaugural, promisiune susţinută ulterior printr-o declaraţie comună a Uniunii Europene şi a statelor membre cu Statele Unite la 15 iunie anul trecut.