Yes, Abe was shot from behind by a person with a make shift shot gun, while his security stood their watching in complete surprise. His back area was completely exposed, and the area unsecured.
The motive was about a Unification Church wrong done to the perp’s mother.The perp thought Abe supported the Unification Church.
https://www.japantimes.co.jp/news/2023/07/06/national/crime-legal/yamagami-trial-explainer/
Abe and Trump were very close friends.
Abe’s assassination is as well understood as the attempt on Trump. They were friends, I believe, and the real assassins are the same.
When The Potato was installed, Abe was already on the docket to come to the WH for a visit (with Trump). Abe wasn’t in the inner circle who could see The Potato as he was, so he got passed off to the cackling Hyena. Then he got assassinated.
That is the best of my understanding.