Even a bluffing superpower can be forced to ante up ... or perhaps fold as casualties mount and treasury accounts go bust.
1838 (n.), 1846 (v.), American English poker slang, apparently from Latin ante "before," from PIE *anti "facing opposite, near, in front of, before" (cf. Sanskrit antah "end, border, boundary," Hittite hanti "opposite," Greek anta, anten "opposite," anti "over against, opposite, before;" Old Lithuanian anta "on to;" Gothic anda "along;" Old English and- "against;" German ent- "along, against"), from root *ant- "front, forehead."
To contribute money one is responsible for or is expected to give: On April 15 we all ante up to Uncle Sam
[1800s+; fr the poker term for an initial contribution to the pot as a game begins]