It is arguable that Litvinov, had he met with civility and those supple conversations à deux in which trained diplomats excel, might have stopped the war... --William Manchester, The Last Lion Vol. 2, page 458.
of, for, or involving only two people; one-on-one
Расстановка переносов
of, for, or in-vol-ving on-ly two people; one-on-one