Does the owner of a commercial building need additional building fire insurance on top of the lessees building insurance?

Absolutely. The lessees carry insurance on their contents only. The building owner carries insurance that covers the entire structure in the event of catastrophic loss The answer above is only partially correct.

The terms of the lease control the obligations of the parties with respect to insurance. In the absence of a specific agreement, neither party is required to have insurance.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.