You can't compare the two. Other countries would have had to have invaded the UK on NI's behalf to do that, never happened.
Other countries HAVE invaded Israel and failed.
So my point remains, the Palestinian fight is doomed. They've got no advantage what so ever over Israel, militarily, technologically, economically, tactically or strategically.
If they stopped firing rockets and rejected terrorism they may get some leverage over Israel on moral grounds which may help them internationally. But while their people continue to support those doing that, remember Hamas is their elected