The peace advocacy group CodePink is collecting American signatures for a letter apologizing to the Iranian people for U.S. aggression and warmaking, particularly President Donald Trump’s decision on January 3 to order the assassination by drone strike of Iranian military commander Qasem Soleimani while Soleimani was in Iraq. 

“As Americans committed to peace and the safety of all people, we, the undersigned, apologize for the actions of our reckless, hate-filled president,” the letter says, “and pledge to do everything we can to stop Trump’s aggression, remove the crippling sanctions you are suffering under, and resume a process of diplomacy with your country.”

The U.S. and Iran have been in a Cold-War style conflict for decades, but the Soleimani assassination marked a notable escalation in tensions. 

In a tweet about Saturday’s demonstrations, CodePink cofounder Medea Benjamin warned that war was still a very real possibility.

“Think we avoided war with Iran a few weeks ago?” said Benjamin. “Think again. We are still on the brink.”