The Biden administration is poised to impose a raft of new sanctions on Russia, including long-feared restrictions on buying new sovereign debt, in retaliation for alleged misconduct including the SolarWinds hack and efforts to disrupt the U.S. election, according to people familiar with the matter.The sanctions, the first of which could be announced as early as Thursday, reflect an attempt by the U.S. to balance the desire to punish the Kremlin for past misdeeds but also to limit the further worsening of the relationship, especially as tensions grow over a Russian military buildup near Ukraine.

The new measures include sanctions on about a dozen individuals, including government and intelligence officials, and roughly 20 entities, according to one of the people, who asked not to be identified because the matter was sensitive. The U.S. is also expected to expel as many as 10 Russian officials and diplomats from the country, two of the people said.