That’s a rhetorical question. So is dropping nuclear weapons on a sovereign country.
The military and most of the country learned from the Vietnam war that you can’t “carpet bomb” a country into submission. Indiscriminate bombing using gravity bombs has long been removed from the US Military playbook. You can’t tell a VietCong from a supporter from 30,000 feet. You may not even be able to tell if you investigate them. You may even find out your “moderate supporters” are actually working for the other side.
Asymmetrical warfare is all about the tactic of Ju-Jutso. Faced with a an enemy with overwhelming military superiority, you defeat the enemy by using that power against them (us). Create fear. Make videos. Count on Fox News news to amplify your attack. Have 19 guys with box cutters create a $trillion in economic damage. Have two or three people with readily available firearms shooting in San Bernardino has people scrambling to “just do something!” like government monitoring of all conversations, turning neighbors into government spies. Inside the Soviet Union, people were terrified to say what the believed because if there were three people present, there was a good chance one would report the conversation.