Of course presidents need the power to act decisively as commanders in chief during times of crisis. I doubt anybody disputes that. But history teaches that most presidents can't be trusted to use that power judiciously. They almost always abuse it for their own political ends, which is why it is vital that they consult Congress.

Trump more than most presidents needs good counsel, but he is also less disposed than most to take it. He doesn't seem to be acting as part of a comprehensive and coherent foreign policy but out of knee-jerk emotionalism. For that reason alone, I'd say that it isn't just a good idea that Congress offers him counsel, it is criminally negligent for them not to do so.