Why is there blood on the far wall.
Why is there blood on the other side of the foot board. Looks as if it was wiped.
This was a rocket attack. Hamas firing rockets pretty much at random I would think into Israel. I doubt they have the aiming ability to hit a specific building.
The mark on the wall may have been shrapnel or debris from the blast (that dark rectangular object on the bed?). Smears on the wall and floor are “wiped” there as they are dragging a person away or lifting them up.