He breaks no new ground, but his column is a good summary of the successes and mostly failures such bombing has racked up. It turns out that beating up the civilian population from the air tends to stiffen the public will to resist.
The main strength of bombing civilian targets is that it helps the attacker’s people feel better to be inflicting pain and suffering on the enemy, which pain and suffering are quite real. There isn’t a lot of evidence that such attacks contribute to victory.