"...Israel considers themselves in a war that Iran helped to start."
Well, Israel officially started the war by attacking Iranian clay. That's the facts on the ground. Israel has clearly been agitating for this war - between the US and Iran - for decades. That makes what they say about this particular act without merit or meaning, as if anything serial liars say could have meaning or merit.
Again, there are procedures that have evolved from international relations regarding extradition of criminals. Starting wars with countries to kill the accused isn't lawful or acceptable diplomatically by any civilized nation.