After two drones crashed into the Kremlin early on Wednesday, Russia escalated its rhetoric, baselessly accusing the U.S. of orchestrating the attacks.

Moscow originally blamed Ukraine for what it is calling an act of terrorism and an attempt to assassinate Russian president Vladimir Putin. But on Thursday Kremlin spokesman Dmitry Peskov argued the United States was “undoubtedly” behind the attack.

“We know very well that decisions on such actions and such terrorist attacks are made not in Kyiv, but in Washington,” Peskov said, according to Reuters.

Peskov alleged Ukraine’s military objectives “are not determined by Kyiv, but they are determined in Washington, and then these goals are brought to Kyiv so that Kyiv fulfills them.”

“In Washington they must clearly understand that we know this,” he added.

Both Ukraine and the U.S. have denied involvement in the alleged drone attack. “It’s all really simple — Russia has no victories,” said Ukrainian President Vladimir Zelenskyy. “[Putin] can’t further motivate his society, he can’t send his soldiers into death anymore, and he can’t motivate his country anymore… now he needs to find any possibility to motivate them.”

A spokesperson for the State Department said Wednesday that the U.S. is working to confirm the origins of the alleged drone attack. He also asserted anything coming out of the Kremlin should be taken with a grain of salt.

The U.S. has also repeatedly denied claims it is intent on inflicting a strategic defeat on Russia, explaining it is simply providing weapons to a Ukraine defending itself from Russia’s illegal invasion.

The idea that Putin was a target of the attack is far-fetched as it has been widely publicized that when Putin stays in Moscow, he stays in a bunker in Novo-Ogaryovo.

The drone incident took place less than a week before Russia’s Victory Day celebrations on May 9. The event is intended to celebrate the defeat of Nazi Germany in World War II, but is widely expected to be used by Putin to rally Russians behind the invasion of Ukraine.

Russia also unleashed a wave of drone attacks on Ukraine in response to the alleged drone attack. The capital Kyiv was targeted and so was the southern city of Kherson, liberated in November of last year. Officials said Russian shelling killed 21 civilians and wounded dozens more, hitting homes, a supermarket, and a train crossing.