Japan's Emperor Naruhito, marking his 65th birthday Sunday, stressed the importance of telling the tragedy of World War II to younger generations, pledging to contribute to efforts to promote the understanding of history and the determination for peace as the world this year observes the 80th anniversary of the war's end. “As the memory of the war fades today, it is important that the tragic experiences and history are passed on to the generations who do not know the war,” Naruhito told a news conference in a pre-recorded comments released Sunday. The war was fought in the name of his grandfather, then- Emperor Hirohito. Naruhito said he and Masako, who were born after the war, have learned from his parents by hearing their stories of wartime experiences and thoughts about peace.