Censor.NET reports citing a statement by the U.S. president.
Obama says that the new actions "follow repeated private and public warnings that we have issued to the Russian government, and are a necessary and appropriate response to efforts to harm U.S. interests in violation of established international norms of behavior."
Obama claims all Americans should be alarmed by Russia's actions.
"In October, my administration publicized our assessment that Russia took actions intended to interfere with the U.S. election process. These data theft and disclosure activities could only have been directed by the highest levels of the Russian government. Moreover, our diplomats have experienced an unacceptable level of harassment in Moscow by Russian security services and police over the last year. Such activities have consequences," the statement reads.
"I have issued an executive order that provides additional authority for responding to certain cyber activity that seeks to interfere with or undermine our election processes and institutions, or those of our allies or partners. Using this new authority, I have sanctioned nine entities and individuals: the GRU and the FSB, two Russian intelligence services; four individual officers of the GRU; and three companies that provided material support to the GRU's cyber operations," the U.S. president stressed.
According to him, the State Department is also shutting down two Russian compounds, in Maryland and New York, used by Russian personnel for intelligence-related purposes, and is declaring "persona non grata" 35 Russian intelligence operatives.
In addition, he said that the Department of Homeland Security and the Federal Bureau of Investigation are releasing declassified technical information on Russian civilian and military intelligence service cyber activity, to help network defenders in the United States and abroad identify, detect, and disrupt Russia's global campaign of malicious cyber activities.
"In addition to holding Russia accountable for what it has done, the United States and friends and allies around the world must work together to oppose Russia's efforts to undermine established international norms of behavior, and interfere with democratic governance," Obama added.
Related materials: Sanctions against Russia