On Wednesday, the United States announced its support for the Venezuelan opposition leader, Juan Guaido, as interim president at the end of President Nicolas Maduro’s term. This means the U.S. has formally un-recognized Maduro’s disputed re-election last May — either a constitutional succession, or a regime change, take your pick.

In backing Guaido, the United States refused to rule out interventions, including from the military, to trigger a transition of power.