As far as we know, King Robert Baratheon on Game of Thrones couldn't see the future like a Melisandre or a Bran Stark. But, his speech in season one about what would come to pass if a Targaryen returns to Westeros appears to currently be set in motion.
This week, when Daenerys set the Unsullied to claim Casterly Rock and Cersei desperately clings to power, Redditor pnr32 was immediately reminded of a conversation between Cersei and her late husband Bobby B.