Why bombing alone can’t work
Rules of engagement require that no (or an acceptable minimum of) civilian casualties are at risk. This cannot be ascertained from 30,000 feet. Therefore targets are extremely scarce.
Exact coordinates from the ground will locate precisely targeted facilities with a minimum of collateral damage.
After an area or facility is bombed, troops must be on the ground to claim that space or the enemy will move straight back in.
At the moment, as bombing raids are carried out at night, ISIS militia, anti-Assad rebel forces or Al Queda etc, embed themselves in what’s left of the civilian population because urban areas are off limits.
The practice of bombing without ground troops is a waste of resources, it’s largely ineffective, indiscriminate and razes infrastructure that may be valuable later.
It also creates more of a refugee problem than would be the case otherwise.
Rules of engagement have been set by Obama... it seems they are designed to be ineffective so as to ensure his friends on the ground remain relatively safe.