In order to prove to Yuri that they are actually a married couple, Loid and Yor are supposed to kiss. Loid is willing to get this done immediately for the sake of Operation Strix, but Yor can't do this sober, so she ends up downing a bunch of wine and gets drunk.  Yuri sees his sister this way, also gets drunk, and is unable to make rational decisions anymore...
But it clearly contains a code
 meant for the West.
.لكن واضح أنّها تحتوي رمزًا مخصّصًا للغرب
Das ist doch eine verschlüsselte Nachricht
an den Westen.
contenait un message codé
pour l’Ouest.
Contiene chiaramente 
un messaggio in codice indirizzato all'Ovest.
Porém, o conteúdo é claramente
um código destinado ao Oeste.
Скорее всего, это шифр,
предназначенный для весталисцы.