the conspiracy theory is about shabak, not the mossad and it was spread by radical israeli right-wingers as a conpiracy by, what they consider, a leftist shabak that was trying to delegitimize the right and increase the support for the left.
yigal amir supported kahanists like ben gvir and his ilk, not the likud.
after rabin, there was ehud barak who was voted in, who also tried to reach a 2 state solution with arafat in 2000.
you wrote "You can admire Israel’s natural beauty (which is just deserts really?)".
if you've been there, you're supposed to know that while the south of israel is mostly deserts, you won't find any deserts in the rest of it.