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© Dado Ruvic / Reuters
Twitter has banned ads from RT and Sputnik over alleged meddling in the 2016 US election. RT's editor-in-chief says the move will spark retaliation from Moscow, and has revealed that Twitter pushed RT to spend ad money during the presidential campaign.

The social network says it will give away money already earned from the two companies.

"Early this year, the US intelligence community named RT and Sputnik as implementing state-sponsored Russian efforts to interfere with and disrupt the 2016 presidential election, which is not something we want on Twitter," the California-based company said in a statement on its blog.

"Twitter has made the policy decision to off-board advertising from all accounts owned by Russia Today (RT) and Sputnik, effective immediately," Twitter said.

Before it publicized its decision, Twitter sent a letter directly to RT, in which it explained the move in terms of making sure that "people feel safe" when they use the microblogging site.

"At Twitter we believe in freedom of expression and in speaking truth to power. We also want to ensure that people feel safe when they interact with our site, and that advertisers bring value to our users," it wrote.

The ban comes a week before Twitter management is due to testify to a US House committee over its role in supposed Russian meddling in last year's elections. Staff from the company will appear alongside Facebook and Google employees.

RT Editor-in-Chief Margarita Simonyan commented on Twitter's decision, saying it was "highly regrettable" and could serve as a precursor to retaliatory measures towards US media.

"I never thought that Twitter is under the control of the US security services - it seemed like a conspiracy theory. But now Twitter appears to have admitted it," Simonyan told RIA Novosti news agency. "This is highly regrettable. It is particularly regrettable that now US media operating in Russia will feel the tender response of the Russian authorities."

Simonyan earlier posted the social network's own pitch for an RT advertising campaign ahead of last year's election, in which Twitter said that the news site would provide an "unbiased point view of the US Elections with an edge."

"Hope Jack Dorsey [Twitter CEO] won't forget to tell Congress how Twitter pitched RT to spend big $$s on US election ad campaign," tweeted Simonyan.

RT turned down Twitter's advertising pitch, which proposed potentially investing millions of dollars. In fact, it spent only $274,100 on all US Twitter ads in 2016 - not just during the election campaign - and has further cut the ad budget on the site this year.

The Russian Foreign Ministry later confirmed that Moscow would take countermeasures in response to what it called a "violation of freedom of speech."

"We consider this an aggressive step that intends to suppress the work of Russian channel RT, which has come about as a result of pressure from the US establishment and security services. Retaliatory measures will naturally follow," said ministry spokesperson Maria Zakharova in a statement.

"We emphasize that preventing Russian media from doing their job, including with the help of security services, is a testament to a crude violation by the United States of international and internal laws that guarantee the freedom of speech."