While the self-styled foreign policy experts have decried the withdrawal of American forces from Syria, I have been looking for the Congressional resolution that authorized the invasion of Syria, without much luck.

Oh, didn't you know? Occupying a foreign country without invitation or consent is an act of war and violates about 6,000 treaties and international laws to which the U.S. is a signatory.

(And this "we can't abandon our allies" gibberish – which we do all the time – is the same trope used to justify nonsense wars since 1951).