Jim, Nurse Siegel did not see anyone massacred.
She saw a small group of bodies afterwards.

squalid and as desperate as it gets Keith - all the witnesses were liars

The Jenin and Marmara witnesses were liars or made to lie. It is a tractic you should at least be aware of instead of swallowing every story without question.

You have opted for "indirectly responsible" on the basis that all the witnesses were "liars"

No. It is Israel's side of the story.
They were indirectly responsible because they were the controlling authority in Beirut at the time, but did not participate or collude in the massacre but did end it.
Redmond did not show them to have been "directly responsible" leaving it open.