I'm just going to say it - no one in their right mind would want Donald Trump leading a military war against our strongest frenemy in the world.
You don't have to hate Trump to admit that he lacks complex strategy and communication skills, as well as a very week, if not incompetent, cabinet.
Politically speaking, being in a "justified war" would have done nothing but hurt the democrats chances. It's hard to unseat a president at 4 years already, but with an ongoing war it's even harder.