Richard Engel announces death of 6-year-old son from Rett Syndrome

Richard Engel announced the death of his 6-year-old son Henry after his years-long battle with Rett Syndrome, a rare genetic neurological disorder. The NBC News chief foreign correspondent, 48, shared the heartbreaking news on Twitter Thursday. Henry, whom Richard shares with his wife Mary, died on Aug. 9, according to a memorial page on the Texas Children's Hospital website.