Complex sentence: On September the 4,2014, the book's launch ceremony in Utrecht was cancelled because of pressures coming from the Spanish Embassy in the Nederlands, who declared the ceremony as "sensitive for the political moment" and blamed the book for "historical distortion".
Split into simpler sentences: On September the 4,2014, its launch ceremony in Utrecht it was cancelled because of pressures of the Spanish Embassy in the Nederlands. It was declared as "sensitive for the political moment" and blamed for "historical distortion".