Possible Clues:

• Denizens of St Petersburg, say
• Sir, as sun turns on these nationals
• Putin's people
• Muscovites, e.g
• Muscovites et al
• PM once ignoring head of Treasury to protect Welsh woman and foreign nationals?
• ''Nyet!'' sayers
• They're red and black cocktails?
• Space race participant
• Cosmonauts, e.g.