Though it sounds more like the name of a cartoon villain, Lex Talionis (the Law of Retribution) is the Latin name for the Jewish concept of an "eye for an eye." Sadly, many false conclusions about Judaism and its morality have emerged from the general misunderstanding of this important principle.
Relax. This is a way of writing. It is imagined. The scene is a room in the White House, setting is informal. The President has asked if I prefer that and I do.