I haz it, as demonstrated by the fact that this article made me snort-laugh: Khaled Mashaal: Hamas Leader Hunted by Netanyahu Haunts Israel - TIME. Lessons, lessons...
...well, Mossad, maybe don't try to assassinate people using a method from Shakespeare? Because that worked out ever so well for Claudius.
...and maybe don't do it in a way practically designed to piss off a leader who's spent three decades bucking regional trends and trying to reach a peace agreement? I mean, no Middle East leader is without blemish, but come on!
...also, maybe don't make hilarious melodramatic warnings that you might try again (“The terrorist...must understand that anyone who executes terror will not enjoy immunity”) when the previous attempt sounds like a rejected Get Smart plot.