The Obama administration announced sweeping new measures against Russia on Thursday in retaliation for what U.S. officials have characterized as interference in this fall’s presidential election, ordering the expulsion of Russian "intelligence operatives" and slapping new sanctions on state agencies and individuals suspected in the hacks of U.S. computer systems.

In a potential tit-for-tat action, Sergey Lavrov earlier Friday called for the expulsion of 35 U.S. diplomats and the closure of two facilities in Moscow after Washington on Thursday sanctioned Russian intelligence officials, expelled 35 Russian diplomats suspected of being spies and shut down two Russian facilities in the United States over evidence Russia interfered in this year's presidential election.

Obama sanctioned two Russian intelligence services, the GRU and the FSB, plus companies which the U.S. claimed supported the GRU. The cybersecurity firm hired by the Democratic National Committee to investigate theft of its emails determined earlier this year the hacking came from the Fancy Bear group, believed to be affiliated with the GRU, the Russian military intelligence agency. The FSB is the main successor to the Soviet-era KGB.