No, they must be kept in check somehow. Let them kill each other off yes, but should they step out of line, they need to be slammed.
This is, after all what Arabs understand and RESPECT. For all the violence, they really get disciplined when you kill them en masse. I know this sounds terrible but look at Egypt. The MB stormed the police and wham 600 dead, 800 dead, 500 dead and now...the streets of Cairo are quiet with MBs in prison. THAT is how it is done in that part of the world.
Israel could have ended two intifadas overnight by mowing them down but no, due to Western sensitivities, UN intervention and moral platitudes from Europe these uprisings went on their bloody way for years.
The world wants Israel to play with kid gloves while their buses and cafes were exploding. So they agree and many die in the process.
In the Arab world, there is no mercy, only force and when Obama and Kerry figure this out there will be quiet, even though it is temporary.
This delay in attacking them only plays into their hands.
I have no problem with slapping them down if they step out of their sandbox. What I have a problem with is expending more American lives and tax dollars IN their sandbox. They want to live by medieval rules put in place by a syphilitic pedophile then let burn in their own hell. I am OK with getting the Coptic Christians to safety, but as far as Arabs calling on the rest of the world, meaning America, to clean up the mess that they bought and paid for absolutely not!