The action came as the administration declassified an intelligence finding that the F.S.B., one of Russia’s leading intelligence agencies, was responsible for the poisoning of Aleksei A. Navalny.
The Biden administration on Tuesday declassified an intelligence finding that the F.S.B., one of Russia’s leading intelligence agencies, orchestrated the poisoning of the opposition leader Aleksei A. Navalny, and announced its first sanctions against the Russian government for the attack and his imprisonment.
The sanctions closely mirrored a series of actions that European nations and Britain took in October and expanded on Monday. Senior officials said the move was part of an effort to show unity in the Biden administration’s first confrontations with the government of President Vladimir V. Putin of Russia.
But none of the sanctions were specifically directed at Mr. Putin or the oligarchs who support the Russian leader.
Just as President Biden held back last week from direct sanctionsagainst Crown Prince Mohammed bin Salman of Saudi Arabia for his role in the operation that killed Jamal Khashoggi, the Saudi dissident, the American sanctions did not touch Russia’s senior leadership.
Mr. Navalny’s supporters praised the sanctions announced on Tuesday, although the measures fell well short of the sweeping action that the opposition leader’s team had called for as he was being sentenced to two and a half years in prison. One of Mr. Navalny’s top allies, Vladimir Ashurkov, sent Mr. Biden a letter in January arguing that only sanctions on top Russian decision makers, along with the business figures he said held their money, could “make the regime change its behavior.”