MOSCOW — The Russian authorities stated on Wednesday that it was slowing entry to Twitter, accusing the social community of failing to take away unlawful content material and signaling that the Kremlin is escalating its offensive in opposition to American web corporations which have lengthy supplied a haven for freedom of expression.

Russia’s telecommunications regulator stated it was decreasing the velocity at which Twitter loaded for web customers in Russia, although it was not instantly clear how noticeable the transfer could be. The regulator, Roskomnadzor, accused Twitter of failing for years to take away posts about unlawful drug use or youngster pornography or messages “pushing minors towards suicide.”

“With the purpose of defending Russian residents and forcing the web service to comply with the legislation on the territory of the Russian Federation, centralized reactive measures have been taken in opposition to Twitter beginning March 10, 2021 — particularly, the preliminary throttling of the service’s speeds, in accordance with the rules,” the regulator stated in a statement.

“If the web service Twitter continues to disregard the calls for of the legislation, measures in opposition to it should proceed in accordance with the rules, as much as and together with blocking it,” it added.

Twitter didn’t instantly remark.

The social community has a comparatively small attain in Russia, however the crackdown might have far-reaching significance. At the same time as President Vladimir V. Putin rolled again democratic freedoms and muffled impartial media, he has allowed the internet to remain essentially free.

Twitter — and to a a lot larger extent, Fb’s Instagram and Google’s YouTube — have given Russians methods to talk, report and manage brazenly despite the fact that the Kremlin controls the tv airwaves.

These social networks, together with Chinese language-owned TikTok, performed a pivotal function within the anti-Kremlin protests that accompanied the return and imprisonment of the opposition chief Aleksei A. Navalny this yr. Mr. Navalny has some 2.5 million Twitter followers, and his investigation printed in January right into a purported secret palace of Mr. Putin was considered greater than 100 million instances on YouTube.

Russian officers declare that Silicon Valley corporations discriminate in opposition to Russians by blocking some pro-Kremlin accounts whereas handing a megaphone to the Kremlin’s critics. They’ve additionally stated that social networks have refused to take away content material drawing kids into the unauthorized protests in assist of Mr. Navalny.

In current weeks, the Kremlin has led an intensifying drumbeat criticizing American web corporations, portray them as corrupting overseas forces.

“On-line, we stumble upon youngster pornography and youngster prostitution, with the sale and distribution of medicine, with kids and youngsters because the target market,” Mr. Putin said this month.

The web, Mr. Putin stated, should respect “the ethical legal guidelines of the society by which we dwell — in any other case, this society will probably be destroyed from the within.”

Twitter has a small person base in Russia, although it’s in style amongst journalists, politicians and opposition activists. A report final yr estimated the service had 690,000 lively customers in Russia, that means that any public backlash over the transfer is more likely to be far smaller than if the Kremlin imposed comparable limits for Instagram or YouTube.