MOSCOW, Russia: After new U.S. sanctions targeted Vladimir Putin’s two adult daughters and other family members of prominent Russians, a Kremlin spokesman has lashed out at the West.

In a newly released list of prominent Russians being sanctioned in response to the war in Ukraine, Putin’s daughters, Maria Vorontsova and Katerina Tikhonova, were included in the latest round of penalties as part of the increasing pressure on Russia.

Western officials have voiced concerns that Putin’s children may be working to hide Putin’s wealth.

Meanwhile, Kremlin spokesman Dmitry Peskov voiced outrage during a press conference – claiming the sanctions against Putin’s daughters were “difficult to understand and explain.”

“Of course, we consider these sanctions, in themselves, to be the extension of an absolutely rabid position on the imposition of restrictions,” Peskov said. “In any case, the ongoing line on imposing restrictions against family members speaks for itself.”

Maria Vorontsova, Putin’s older daughter, is a medical research executive.

The European Union put in place sanctions on both daughters, following the U.S. move days earlier.

The Treasury Department described Tikhonova as a “tech executive whose work supports the [government of Russia] and defense industry.” Meanwhile, Vorontsova, the elder of Putin’s two known daughters, was described as a leader of “state-funded programs that have received billions of dollars from the Kremlin toward genetics research and are personally overseen by Putin.”

Media reports indicate that Putin has kept his two adult daughters out of the public eye – often not even acknowledging their existence. The daughters are Putin’s children with his ex-wife Lyudmila Putin, a former flight attendant whom he divorced in 2013.