not the book on the Trump White House, but Randall Hansen's book on the Allied bombing of Germany.
His conclusion was that the daylight, more or less precision bombing by the American Army Air Force made a substantial contribution to winning the war, by destroying the Luftwaffe fighter force, and by targeting transportation and oil production infrastructure.
By contrast, the British night carpet bombing, which was deliberately aimed at civilian housing and also at historic city centers, did nothing to aid the war effort--in fact hampered it by sucking in resources that would have been better spent on winning the Battle of the Atlantic and preparing for the invasion of France. The idea that German civilian morale could be destroyed by targeting cities at night worked as well for the British against the Germans as it had worked for the Germans in 1940 against the British--that is to say, barely at all. And the night bombings did little or nothing to compromise German war production.
Hansen is quite critical of Air Marshal Harris, who continued to detach bomber squadrons from their crucial role in targeting military targets in preparation to D-Day, instead diverting them to more or less useless attacks on Berlin and other city centers.
The eyewitness accounts Hanson includes of the firebombing of Hamburg are particularly grisly.
War is always an atrocity, but there are ways to try to temper the horror. The destruction of art, and the targeting of civilians are two approaches to war that should be avoided as best we can.
Thanks for your post. Kesselring had a reputation for being a particularly ruthless commander (which is why Hitler liked him so) but I hadn't heard of this particular facet of his career.