I have an idea or two. Lock them in a dungeon and throw away the key. Negotiations may last as long as the air, perhaps, earlier. No water. No food (for thought).

Just do it, Uncle Sam, Sir!

As for the choice of a stinky, air less and most dangeous dungeon?

I got a spare one, I think, somewhere.

Have a nice day, Oops, day and night, night and day, forever.

...and I am Sid Harth@webworldismyoyster.com