THE HAGUE, Netherlands -- A man who sent death threats to the Dutch king's eldest daughter, Princess Amalia, was sentenced Tuesday to three months imprisonment and ordered to undergo psychiatric treatment.The Overijssel District Court convicted the 32-year-old man of sending threats via Instagram to the 16-year-old heir to the Dutch throne and one of her friends.“He threatened her with rape and threatened both of them with death,” said Ronald van Vuure, a judge at the court authorized to speak