This might be an obvious question (SPOILERS)

I think the second part is true - she's tunnel visioned in that sense... but I do think she and the dragons could take out the white walker army. It depends whether all the magic that created the Night King in the first place is also destroyed and can never return.

Reckon if she said I'll go burn all the whitewalkers - plus she knows where they are - North heading South towards the wall - he'd be supportive. And that's an enormous army in a wasteland, easy to spot.

He doesn't want her to waste her time flying round flying around an ocean trying to find ships - however I think he should let her do that as well.

»How big is Westeros though? Can she simply fly over within a few hours or will it take days?«


In S07E01, Jon said: "There's a thousand miles between us and Cersei", but we don't know if that’s the exact distance or more a figure of speech.
When Arya left the Inn at the Crossroads in S07E02, one of the other travellers said: "200 miles to King's Landing".

Both statements indicate that there’s roughly a thousands miles between Dragonstone and the Wall, too.
We don’t know how fast the dragons can fly, and we don’t know how much a Westerosi mile actually is. For example, Wikipedia says: »The "old English mile" of the medieval and early modern periods varied but seems to have measured about 1.3 international miles«. Since GoT takes a lot from the european mediaeval times, a Westoris mile might refer to measurement – and, even more likely, a "mile" might not be a strictly defined as it is nowadays.

However, it’d say that even on dragonback, it’d be a matter of several days. One way.

Thank you! :) Nothing to be lost, a lot of knowledge to be gained, and if she was to defeat the white walkers with her dragons the whole of the North would be behind her.

But obviously that's too easy and wouldn't make for dramatic TV.