According to the United Nations Educational, Scientific and Cultural Organization (UNESCO), the destruction or devastation of any part of the world’s cultural and natural heritage (anywhere in the world) causes severe impoverishment to the heritage of all nations of the world. In fact, it destroys parts of the human experience and deprives all generations including the future generations from learning about historical and cultural events of our common history (negative or positive). The voice of the World Cultural Heritage (WCHV) Foundation, which aims to preserve the cultural and historical heritage of nations, opposes any kind of destruction of historical monuments.
This is the text of the 1972 Convention:
https://whc.unesco.org/archive/convention-en.pdf