SANTANDER – Serbian Prime Minister Ana Brnabić will pay a one-day visit to Spain tomorrow to participate at the conference “Quo Vadis Europe? The European Union before the new political cycle”, organised by the International University of Menéndez Pelayo. She will meet with Minister of Foreign Affairs of Spain and the new High Representative of the EU for Foreign Affairs and Security Policy Josep Borrell, who will also be one of the participants of the conference.