In 2016 presidential candidate and president presumptive Hillary Clinton promised a “military response” to fictional Russian hacking from mythological basement dwellers in Romania and Macedonia. Now Washington openly pledges to launch cyber attacks – the Pentagon lists cyberspace as the fifth battlespace– and the Putin regime responds by saying it’s concerned.
I can see the TASS headline the day after U.S. cyber attacks on Russia: Pentagon Launches Devastating Assault On Russian Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance Infrastructure; Putin Frowns, Arches Eyebrow.
Talk about deterrence!

Moscow concerned about reports of US plans to conduct cyberattacks on Russia — Kremlin
According to The New York Times, the move is expected over the next three weeks

MOSCOW, March 9. /TASS/. Media reports of the United States’ plans to conduct cyberattacks against targets in Russia cause concern, Russian Presidential Spokesman Dmitry Peskov told reporters on Tuesday.

“These reports are alarming because quite a reputable American newspaper [The New York Times – TASS] does not rule out cyberattacks,” he pointed out. According to Peskov, “this is nothing but international cybercrime.”

“The fact that the newspaper doesn’t rule out that the American state could be involved in cybercrime, is definitely of great concern to us,” the Kremlin spokesman stressed.