The Philistines were probably Greeks, or Myceneans, or at least from that neck of the woods, and therefore descendants of Japheth. They are most likely descended from defeated "Sea Peoples" settled by Pharoah along the coast of Canaan.
Yep, that’s it exactly.
Want peace with Israel? sure, stop killing Israelis.
It’s actually really easy, IF they truly wanted peace.
But since they don’t . . .