On Friday, Donald Trump dismissed Lt. Col. Alex Vindman from the National Security Council, months before his tenure was set to expire. Trump sacked Vindman, a Purple Heart recipient and the White House’s top expert on Ukraine, for his courageous testimony during impeachment proceedings in November, when he told Congress he’d reported his concerns about Trump’s now-notorious July 25 phone call with Ukrainian President Volodymyr Zelensky.

But who’s truly to blame for this naked act of thuggish retaliation? Every Republican senator who voted to acquit Trump for his abuses of power and desperate attempts to cover them up. Most especially, that includes the vulnerable Republicans who are up for re-election this November: