The White House has expressed concerns that Russia may be advising Tehran on best practices to suppress the ongoing protests in Iran.

White House press secretary Karine Jean-Pierre said during a Wednesday joint press briefing with Coordinator for Strategic Communications at the National Security Council in the White House John Kirby that Moscow may be helping the Islamic Republic, drawing on its own experience in suppressing open demonstrations.

"Our message to Iran is very very clear. Stop killing your people and stop sending weapons to Russia to kill Ukrainians,” she said.

She added that evidence that Iran is helping Russia wage a war against Ukraine is "clear" and "public," noting that “Iran and Russia are growing closer the more isolated they become.”

Moreover, Kirby also said that the White House is certain about Russia’s help in the crackdown on protesters, adding that it is not an allegation but a fact. “We know they may be considering some sort of support to Iran’s ability to crack down on protesters. And sadly, Russia has experience at doing that, he said.

Kirby called it “just yet another example of Russia and Iran now working together to violate the — not only the human rights and civil rights of people in Iran but, of course, put in further danger the lives of Ukrainians.”