How does Moscow react to the bombing?

Moscow stays silent.... without reaction. Mark believes that this means they are preparing a strike of their own.

"It is, but what worries me most is Moscow." "What's Moscow saying?"

"Not a word. Not a whisper. Usually Radio Moscow would be screaming bloody murder. That's what worries me. As long as people keep talking they're not fighting. When Moscow quits talking, I'm afraid they're acting." Mark borrowed a cigarette and lit it. "I think the chances are about sixty-forty," he said, "that they've started their countdown."