WASHINGTON—After 10 days of deliberations, President Biden had ordered the Pentagon to conduct airstrikes on two targets inside Syria Feb. 26 when an aide delivered an urgent warning about 30 minutes before the bombs were scheduled to fall.
A woman and a couple of children were in the courtyard at one of the sites, according to battlefield reconnaissance. With the F-15Es in flight to the targets, Mr. Biden scratched the second target but ordered the strike on the first objective to proceed.
The previously undisclosed episode involving Mr. Biden’s first known use of force as commander in chief was an unexpected coda to a methodical decision-making approach in which the Biden administration sought to balance competing interests in the Middle East tinderbox.