The move by social media company Twitter to ban two Russian news outlets from placing advertisements on the site is a "blatant violation" of international norms, a Russian Foreign Ministry spokeswoman said, adding that retaliation measures are unavoidable.RT
Twitter decision on RT & Sputnik aggressive step, retaliation to follow – Russian Foreign Ministry
Also
Twitter bans all RT advertising, citing ‘election interference’
See also
Sputnik International
Russia Will Respond to Twitter's RT, Sputnik Ad Ban - Foreign Ministry
Sputnik Editor-in-Chief Says Twitter's Decision to Ban Ads 'Regrettable'
