Moving on, let's lighten up a bit: international espionage.
I've no idea how the Russian secret services operate, but the conversation in English between a young Russian woman and a young German guy who was clearly trying to impress her sounded to me like it ticked all the boxes for a honey trap.
Main topics were luxury watches, footballers' salaries, stocks and shares, property investment strategies.
Totally normal Saturday train chat on a local train from Kiel to Hamburg. Watch out people!