We hope that these talks will be a 'doorway' to peace. [=will lead to peace]
He stood in the 'doorway', wondering if he should go in.
Homeless people sleep in the 'doorways' of the shops.
(..) - I'll go out... - Good luck. And tell him to move. - And I don't need good luck. Thank you. - Yes, you do. You just think you don't. You're blocking our doorway. You think you might wanna move the cab? You know, eye shadow, mascara... lipstick, rouge. Not rouge. "Blush-on" they call it. (..)1976 Taxi Driver