This isn't the first time Netanyahu has referred to killings in Gaza as a "tragic mishap".
28 May 2024
Deadly strike on Rafah a tragic mishap, Netanyahu says
A mishap is surely something trivial, like stubbing one's toe or burning the toast. This choice of words (and he'd surely correct it if it was a bad translation, his English seems very good) suggests to me that he's displaying his arrogance and dismissal of the killings as insignificant.