From L to R standing: King Haakon VII of Norway, Tsar Ferdinand of the Bulgarians, King Manuel II of Portugal and the Algarve, Kaiser Wilhelm II of Germany and Prussia, King George I of the Hellenes, King Albert I of the Belgians. Seated from left: King Alfonso XII of Spain, King George V of the United Kingdom, King Frederick VIII of Denmark
That photo has always fascinated me. For so many reasons, one of which is there resemblances. Generational privilege does tend to separate one from the realities of everyday people.
Royal families in Europe tended to marry others from royal families in Europe, so they might have all be related.
As for the uniforms: I am sure that also are related as each are probably the commander-in-chief of their respective militaries.
In 4 years they will be at each other’s throats, killing their own people…