Tourism Is A Mortal Sin.

I Was Able To Persuade Them To Let Me Shoot In Areas That Were Beyond The Volcano Itself. Beyond The Joint Scientific Program Between Cambridge University And North Korean Scientists. I Was Able To Film In A Kindergarten, Subway, Other Things You Would Not Normally Be Allowed To Do.

The Deal Was We Had To Have People Accompanying Us And They Would Ask Us Not To Film Something [in North Korea]. For Example, We Wanted To Film At A Certain Place And There Happened To Be A Building Under Construction And It Didn't Look As Fancy As The Other Buildings, So They Wanted Us To Shoot Where Everything Looked Finished And Made A Good Impression Of The Cityscape.

At The Same Time, There's Something Magnificent About Volcanoes; They Created The Atmosphere That We Need For Breathing.

Hold Firm To Your Vision But Don't Be A Tyrant On Set.

With Actors, Normally I Don't Like To Have Any Conversation About Background And About Motivations And All This.