US President Joe Biden administration has determined a Russian effort is underway to create a pretext for its troops to potentially further invade Ukraine, and Moscow has already prepositioned operatives to conduct “a false-flag operation” in eastern Ukraine.

The administration believes Russia is also laying the groundwork through a social media disinformation campaign by framing Ukraine as an aggressor that has been preparing an imminent attack against Russian forces in eastern Ukraine, according to the official, who spoke on condition of anonymity because the official wasn’t authorized to discuss sensitive intelligence on the record.

Also read: Mask rules tighten as winter’s COVID-19 wave hit Europe

U.S. intelligence officials have determined Russia has already dispatched operatives trained in urban warfare who could use explosives to carry out acts of sabotage against Russia’s own proxy forces — blaming the acts on Ukraine — if Russian President Vladimir Putin decides he wants to move forward with an invasion, the official added.

The official did not provide details about how the intelligence community came to its determination or how much confidence they have in the assessment.

Also read: Former aide of Boris Johnson says sorry for party on eve of royal funeral

A second person familiar with the discussions between Washington and Kyiv about the crisis said the White House had not notified Ukraine before announcing Friday’s release.

Ukraine is also monitoring the alleged use of disinformation by Russia. Separately, Ukrainian media on Friday reported that authorities believed Russian special services were planning a possible false flag incident that could be seen as provoking additional conflict.

Also read: December retail sales fall 1.9% after early holiday rush

The new U.S. intelligence was unveiled after a series of talks between Russia and the U.S. and western allies this week in Europe aimed at heading off the escalating crisis made little progress.

White House national security adviser Jake Sullivan on Thursday said that the U.S. intelligence community has not made an assessment that the Russians, who have massed some 100,000 troops on the Ukraine border, have definitely decided to take a military course of action in Ukraine.

Also read: Afghan tradition allows girls to access the freedom of boys

But Sullivan said Russia is laying the groundwork to invade under false pretenses should Putin decide to go that route. He said the Russians have been planning “sabotage activities and information operations” that accuse Ukraine of prepping for its own imminent attack against Russian forces in Eastern Ukraine.

He said that the move is similar to what the Kremlin did in the leadup to Russia’s 2014 annexation of Crimea, the Black Sea peninsula that had been under Ukraine’s jurisdiction since 1954.

Also read: Virginia Giuffre lauds court ruling on Prince Andrew as she vows to ‘expose the truth’

The Crimea crisis came at a moment when Ukraine was increasingly looking to strengthen ties with Europe and the West. Russia stepped up propaganda that Ukraine’s ethnic Russians were being oppressed in Eastern Ukraine.

Russia has long been accused of using disinformation as a tactic against adversaries in conjunction with military operations and cyberattacks. In 2014, Russian state media tried to discredit pro-Western protests in Kyiv as “fomented by the U.S. in cooperation with fascist Ukrainian nationalists” and promoted narratives about Crimea’s historical ties to Moscow, according to a report by Stanford University’s Internet Observatory.

Also read: Cyberattack targets Ukraine government websites, amid rising tensions with Russia

Efforts to directly influence Ukrainians appear to have continued during the ongoing conflict in eastern Ukraine in which at least 14,000 people have died. The Associated Press reported in 2017 that Ukrainian forces in the east were constantly receiving text messages warning that they would be killed and their children would be made orphans.

The U.S. intelligence community has taken note of a buildup on social media by Russian influencers justifying intervention by emphasizing deteriorating human rights in Ukraine, suggesting an increased militancy of Ukrainian leaders and blaming the West for escalating tensions.

Also read: Two India-bound flights averted major collision in Dubai: Report

“We saw this playbook in 2014,” Sullivan told reporters on Thursday. “They are preparing this playbook again.”

The Russians, while maintaining they don’t plan to invade Ukraine, are demanding that the U.S. and NATO provide written guarantees that the alliance will not expand eastward. The U.S. has called such demands nonstarters but said that it’s willing to negotiate with Moscow about possible future deployments of offensive missiles in Ukraine and putting limits on U.S. and NATO military exercises in Eastern Europe.

(With inputs from AP)