We conducted an experimental test of the displaced international punishment hypothesis by testing whether reminding people about 9/11 would increase support for U.S. military intervention in Syria. A community sample of Americans were reminded of 9/11, the terrorist attacks in London in 2005, or were given no reminder before being asked their support for military intervention in Syria. Results indicated that there was a significant suppression effect of desired revenge for the 9/11 attacks on support for military intervention for liberals and moderates, but not conservatives. Liberal and moderate participants reminded of 9/11 supported military intervention because reminders of 9/11 primed strong desires for vengeance. These findings suggest that reminding people of a severe offense to their country triggers a desire for revenge, which increases the desire to punish a target symbolically similar to the original perpetrator, but only when doing so is politically expedient.