This is a good article on this incident.
However, I am thinking of Leo on the cusp of the 12th house of hidden enemies, whose ruler is the Sun in the 3rd house.
Could it be that someone is in a senior or leadership position knew Was this going to happen?
Alternatively, the Sun in 3rd Libra points to much collaboration with whoever was responsible, and the square Jupiter, even without astrology, clearly meant a large-scale attack.
