Some questioned the use of military force as a punitive measure and suggested that the White House lacks a coherent strategy. If the administration is ambivalent about the wisdom of defeating or crippling the Syrian leader, possibly setting the stage for Damascus to fall to fundamentalist rebels, they said, the military objective of strikes on Assad’s military targets is at best ambiguous.

“There’s a broad naivete in the political class about America’s obligations in foreign policy issues, and scary simplicity about the effects that employing American military power can achieve,” said retired Lt. Gen. Gregory S. Newbold, who served as director of operations for the Joint Chiefs of Staff during the run-up to the Iraq war, noting that many of his contemporaries are alarmed by the plan.

Marine Lt. Col. Gordon Miller, a fellow at the Center for a New American Security, warned this week of “potentially devastating consequences, including a fresh round of chemical weapons attacks and a military response by Israel.”