Back in October, Russian TV was supposed to comply with with a request from the United States Department of Justice that it register as a foreign agent under the Foreign Agents Registration Act (FARA).  This decision was reached because an intelligence report indicated that RT had influenced the 2016 election. Be that as it may, RT skipped the deadline and this tweet was sent, which speaks for itself.

Mid-November, Russian TV or RT, decided to comply and they registered as a foreign agent. Yesterday Vladimir Putin retaliated and signed amendments into law requiring that all U.S. media in Russia likewise had to register as foreign agents. CNN:

The operations of RT, formerly known as Russia Today, and Sputnik news have faced greater scrutiny in the US over the past year. RT was singled out in a intelligence community report in January on Russia's attempts to influence the 2016 US election.
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RT "conducts strategic messaging for [the] Russian government" and "seeks to influence politics, [and] fuel discontent in the U.S.," the report stated. The report also said Sputnik, a Russian government-controlled news site, was "another government-funded outlet producing pro-Kremlin radio and online content."

If it ended there, it might be okay. But the tentacles of these “new amendments” to Russian law are long, reaching into the domain of Radio Free Europe.

Tom Kent, president of Radio Free Europe/Radio Liberty, said it was too early to speculate on the effects of the new amendments.
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"We can't speculate at this point (on) the effect of this new law since no news organization has been specifically named as a foreign agent and the restrictions to be imposed have not been announced," Kent said.
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"But we can say we remain committed to continuing our journalistic work of providing accurate and objective news to our Russian speaking audience.
This may be why Trump renewed his ongoing hostility with CNN yesterday, because he knew this step was about to be taken. CNN retaliated against Trump’s latest idiotic tweet saying Fox News was a much more important outlet, and they’re not the only ones to register an opinion. Here’s the original twitter exchange.

Former CIA and National Security Agency Director Michael Hayden replied.

Oh, he's capable alright. And this is how he and his BFF Vlad would have television be, if they could have their druthers.