CETINJE, MONTENEGRO - MARCH 18: Prince Charles, Prince of Wales (L), Montenegran President Filip Vujanovic, Camilla, Duchess of Cornwall (2nd from R), and Montengeran First Lady Svetlana Vujanovic emerge from the Presidential Palace on March 18, 2016 in Cetinje, Montenegro. The Prince and Duchess are visiting Croatia, Serbia, Montenegro and Kosovo. (Photo by Sean Gallup/Getty Images)

CETINJE, MONTENEGRO - MARCH 18:  Prince Charles, Prince of Wales (L), Montenegran President Filip Vujanovic, Camilla, Duchess of Cornwall (2nd from R), and Montengeran First Lady Svetlana Vujanovic emerge from the Presidential Palace on March 18, 2016 in Cetinje, Montenegro. The Prince and Duchess are visiting Croatia, Serbia, Montenegro and Kosovo.  (Photo by Sean Gallup/Getty Images)