There's an obvious threat to the Seven Kingdoms heading into Game of Thrones season 7, which looks to be centred around the newly-crowned King Jon mounting a resistance force to fight the White Walkers.

Asked at the premiere of episode 1 who the biggest threat is, Isaac Hempstead-Wright (Bran Stark) admitted as much: "Oh it's so the Night King."

He did, however, suggest that it is human error and foolish pride that might ultimately be Westeros' downfall.

"It may not actually be the Night King who ends up being the undoing of everybody," he added, suggesting the humans will be their own worst enemy thanks to rivalry and infighting.

Game of Thrones S7E1 'Dragonstone' - in pictures Show all 7 1 /7 Game of Thrones S7E1 'Dragonstone' - in pictures Game of Thrones S7E1 'Dragonstone' - in pictures Brienne and Pod HBO Game of Thrones S7E1 'Dragonstone' - in pictures Dany lands at Dragonstone, her new home HBO Game of Thrones S7E1 'Dragonstone' - in pictures Cersei's newly painted map HBO Game of Thrones S7E1 'Dragonstone' - in pictures Fan-favourite Lyanna Mormont HBO Game of Thrones S7E1 'Dragonstone' - in pictures Cersei, obligatory glass on wine in hand HBO Game of Thrones S7E1 'Dragonstone' - in pictures Mera reaches the Wall, presumably with Bran HBO Game of Thrones S7E1 'Dragonstone' - in pictures The Watchers on the Wall HBO

Game of Thrones season 7 launches on HBO, Sky Atlantic and NOWTV on 16 July.