Months after hack, US poised to announce sanctions on Russia

The Biden administration is preparing to announce sanctions in response to a massive Russian hacking campaign that breached vital federal agencies, as well as for election interference, a senior administration official said.

The sanctions, foreshadowed for weeks by the administration, would represent the first retaliatory action announced against the Kremlin for last year's hack, familiarly known as the SolarWinds breach. In that intrusion, Russian hackers are believed to have infected widely used software with malicious code, enabling them to access the networks of at least nine agencies in what U.S. officials believe was an intelligence gathering operation aimed at mining government secrets.

Besides that hack, U.S. officials last month alleged that Russian President Vladimir Putin authorized influence operations to help Donald Trump in his unsuccessful bid for reelection as president, though there's no evidence Russia or anyone else changed votes or manipulated the outcome.

The measures are to be announced on April 15, according to the official, who was not authorized to discuss the matter by name and spoke on condition of anonymity.

It was not immediately clear what, if any, other actions might be planned. Officials had previously said they expected to take actions both seen and unseen.

The sanctions, presumably intended to send a clear retributive message to Russia and to deter similar acts in the future, come amid an already tense relationship between the U.S. and Russia.

President Joe Biden told Putin this week in their second call to "de-escalate tensions" following a Russian military buildup on Ukraine's border, and said the U.S. would "act firmly in defense of its national interests" regarding Russian intrusions...