there is NO such boundary to anyone who is informed... and YOU don't draw the boundaries.
The "intifada" started months before Sharon even dreamed of going to the Temple Mount. If you insist I'll provide references, but even a cursory review of the events will convince you that the Sharon-Temple Mount theory of the intifada is a bunch of hogwash.
A parallel to your thought is: Canada goes to war with Mexico and expects the US to stay out of it, even tho Mexico bombs Wash DC, it is not the US's fight. The US should stay out of it and suffer the damage.
That is bullsh*t thinking.
Any country that is attacked by another country has the right to defend themselves, including Israel.
If Iraq is stupid enough to attack Israel, again, the war will be over in about 24 hours, with Baghdad a smouldering ruin.
Horse pucky. The Intifada (phase 2 I might add) was planned and ready to go way before he went to the Jewish holy site. Yes it's a Moslem holy site too, but when the Moslems, ie. the Jordanians, controlled access to it, Jews were not allowed, once the Israelies took over access they allowed people of all faiths to have access to the Temple Mount. He had every right to visit a holy place of his religion, esepcially in light of the fact that he wasn't denying Moslems access to their part of it. Even after the Jews once again had access to the Wailing Wall, it was common for the Islamists on the top of the mount to pelt worshipers with rocks, and not just little ones either.
Why should Sharon, or any other foreign leader, need permission of the US to move their forces within their own country?