General Gen Diendere, who lead a coup by members of the elite presidential guard on Thursday, now appears to be conceding that his position is untenable.
In all cases, we are — typically — looking at something in the past which has made an easy transition to a particular position untenable or frightening.
A rebellion within the Conservative government made his position untenable: dozens of ministers resigned, starting with the health secretary and the chancellor of the exchequer (finance minister).