The Kremlin Saturday slammed Washington’s plans for a retaliatory cyberattack against Russia, vowing to protect itself from Uncle Sam’s “unpredictably and aggressiveness.”

“The threats directed against Moscow and our state’s leadership are unprecedented, because they are voiced at the level of the US vice president,” a Kremlin spokesman said.

Moscow’s remarks came in response to Vice President Joe Biden promising a “clandestine” cyber-operation in retaliation for Russia’s alleged hacking interference in the US presidential election.

Biden vowed in an NBC interview, to air Sunday, that the US has “ the capacity to do it,” and said the counter-hacking would “send a message” to Russian President Vladimir Putin.

“To the backdrop of this aggressive, unpredictable line, we must take measures to protect (our) interests, to hedge risks,” the Kremlin spokesman responded, without elaborating on what those measures might be.

Threats of an American cyber-response constitute “borderline insolence,” complained Kremlin aide Yuri Ushakov.

Mounting tensions between the two countries led Russia’s UN ambassador to observe late Friday that relations are at their lowest point since the 1973 Mideast War.

“The general situation I think is pretty bad at this point, probably the worst … since 1973,” the ambassador, Vitaly Churkin, said in an interview with three journalists at Russia’s U.N. Mission.

Churkin blamed “a string of things,” including the cyber-hacking accusations and US pushback against Russia’s military actions in Syria and Crimea.

Meanwhile, for all their thunderings of protest in the international press, Russian officials Saturday filled their press with scoffing over the US ability to hack the Kremlin.

“I believe that we can, from the point of the government, sleep calmly,” Putin’s internet czar, German Klimenko, said in an interview with a Russian website Life.ru.

“Look at me, you think I’m afraid of anything?” scoffed Dmitryi Rogozin, Russia’s deputy prime minister of defense.

“Putin and the great Russia is with us,” Rogozin told Russian reporters Saturday.

Last week, Washington publicly blamed Russia for hacking into the computer communications of officials from the Democratic National Committee; Russia is also suspected of hacking the e-mails of Hillary Clinton’s campaign chairman.

The hacked correspondence was leaked to WikiLeaks and other entities in recent months, spurring front-page stories critical of the DNC and Clinton’s campaign.

Russia has insisted it isn’t hacking the US.

Earlier this week, Russian Foreign Minister Sergei Lavrov told CNN the claims were “flattering” but baseless, with not a “single fact” to prove it.

The Kremlin was propelled to the heart of American politics in July after Clinton’s campaign blamed Russia for an embarrassing leak of DNC emails that showed the organization blatantly favoring the Democratic nominee over progressive contender Bernie Sanders.

In one leaked e-mail, DNC officials strategized about getting reporters to ask Sanders right before the key West Virginia primary whether he is an atheist.

Russia has been accused of favoring Donald Trump — who has praised Putin and called for better ties with Moscow.

With Post Wire Services