George R.R. Martin says he's written 'three quarters' of 'The Winds of Winter'

A Song of Ice and Fire writer George R.R. Martin sat down with Late Show host Stephen Colbert to discuss the difference between Game of Thrones' Iron Throne and the much larger one in his novel, the colourful dragons in House of the Dragon, and his thoughts on the pessimistic outlook modern fantasy and science fiction appears to...