Fire spread rapidly through a major portion of the magnificent Gothic cathedral at the heart of Paris, causing a spire to collapse and raising fears over the building The cause of the blaze was not immediately confirmed, but the cathedral had been undergoing intense restoration work.
Later, before making a speech on the economy in Minnesota, Trump said the television images he'd watched during his flight were "a terrible sight to behold." "It was burning at a level you rarely see a fire burn," he told the crowd.
He added: "It's a part of our culture, it's a part of our lives.
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