From a story on axios.com by Andrew Solender headlined “House progressives withdraw Ukraine letter after backlash”:

The Congressional Progressive Caucus on Tuesday announced it is withdrawing a letter to President Biden calling on him to couple military aid to Ukraine with a “proactive diplomatic push” to end hostilities with Russia.

Why it matters: The letter appeared to indicate that some on the Democratic Party’s left flank were advocating a softening of U.S. policy towards the war in Ukraine, though several members who signed on now say that’s not their position.