Crown Prince Naruhito and Crown Princess Masako marked their 15th wedding anniversary Monday, but their initial hopes of engaging in "Imperial diplomacy" are yet to be achieved.
From November 1994 to December 2002, the couple made five official overseas trips, but since then they have not traveled abroad together except for a 2006 visit to the Netherlands aimed at helping the Crown Princess recover from a stress-induced illness.
The Crown Princess, 44, was diagnosed in July 2004 as suffering from adjustment disorder, a psychological condition attributable in part to the pressures of palace life, and has relinquished many of her official duties while receiving treatment.