A terrorist attack in St. Petersburg, planned last saturday, has been avoided.
http://edition.cnn.com/2017/12/17/politics/trump-putin-call-st-petersburg-attack/index.html
Of course, on april 3 there has been an actual bombing of the St. Petersburg metro.
Nina and Kira, and the other RLC-couples in St. Peterburg, seem to be relatively calm about it. Now and back in april. Even when considering how 'common' attacks ostensibly have become these days, one would assume they appear more concerned.
Same goes for the Barcelona attacks a few months ago for the apartments over there, if I recall correctly.