Madrid, April 6 -- Spanish Prime Minister Pedro Sanchez's official visit to Vietnam from April 8 to 10 at the invitation of Prime Minister Pham Minh Chinh is expected to create strong momentum for both countries to continue developing their strategic partnership toward a new height with greater substance and effectiveness, according to a Vietnamese diplomat. In an interview with the Vietnam News Agency, Vietnamese Ambassador to Spain Doan Thanh Song laid stress on the visit's historic significance as the first official trip by a Spanish PM to Vietnam since the establishment of diplomatic relations in 1977, and the first high-level visit from Spain since King Juan Carlos and Queen Sofia's trip in 2006. The fact that PM Sanchez has chosen V...