Subject: A history lesson for Trump.
Just kidding, Trump is incapable of learning.

The Famous Prophecy

After showering the temple with lavish gifts, Croesus asked if he should attack the Persians. The Pythia (the priestess) gave a famously cryptic response:"If Croesus goes to war, he will destroy a great empire."

Overjoyed and convinced that the "great empire" in question was Persia, Croesus crossed the Halys River and launched his attack.

The Twist

The invasion was a disaster. Croesus was defeated at the Battle of Pteria and eventually captured when the Persians besieged his capital, Sardis.

When Croesus later sent a messenger back to Delphi to complain that the god Apollo had deceived him, the Oracle replied that he had only himself to blame. The prophecy had been accurate: by going to war, Croesus did destroy a great empire—his own.

Note: Modern historians often view these stories as cautionary tales about hubris (excessive pride) and the ambiguity of divine fate, rather than literal transcriptions of historical events.