While our government plays the blame game with a side of sabre rattling, Russia remains calm and shows some class. The typical reaction of one country sending diplomats packing is to do the same as quickly as possible, and maybe upping the ante by closing some cultural exchange problem, canceling some trade agreement, or something else along those lines.
But not this time. This time Russia acts like the calm cool kid on the playground who laughs and walks away when the bully shoves him, instead of shoving back.
Well, played Russia, well played. You are showing the world leadership and pose. Things the United States used to be respected for.