During the war, Picasso was visited by Nazi Ambassador Otto Abetz in his Parisian studio.
The latter came upon a picture of Guernica, which had been sent to New York by the painter as soon as the Exhibition was over.
He asked: "Did you really do this?" to which Picasso answered: "No, You did".
Guernica is Pablo Picasso's monumental 1937 oil painting that stands as one of the most powerful and famous anti-war statements in history.
Painted in response to the bombing of the Basque town of Guernica during the Spanish Civil War, the artwork captures the universal suffering and brutality of conflict through its chaotic imagery and stark monochrome palette.