Good point, but the more pertinent quesion is whether "western countries" would allow so many terrorists to operate from their midst.
I'm not an IS supporter and condemn their actions in the strongest terms.
Definition of terrorist: An individual or organization or government who uses violence, terror, and intimidation to achieve a result. Keep in mind one man's terrorist is another's freedom fighter. It just depends which side of the fence you're on. Should the US invade SA (hopefully that won't happen as we don't have large oil reserves nor does uncle Bob needs to fear anything from the US for his human rights violations) and the civilians form resistance groups, they'll be portrayed as terrorists or rebels by the US controlled media. The resistance and their supporters will consider themselves as freedom fighters. Another example is Mandela was portrayed as a terrorist by the Nat propaganda machine, now he's a saint. It all depends who's in control of the brainwashing tools.
In response to the above quote, firstly, Assad is not allowing IS to operate in Syria and secondly, what right does the "super powers" have to bombard civilians and hospitals in the Middle East with their WMD? It's an open secret the US is supporting, training and arming rebels in Syria to overthrow Assad, so who are the real terrorists now? It's possible for the US to orchestrate any scenario anywhere in the world and blame it on any individual, group, religion or government (the blatant propaganda and absurdity of the discovery of the passport of one of the 911 bombers found in the ruins of the Twin Towers comes to mind) as they control the global mass media, just as the Nats controlled the minds of the whites for over 40 years with SABC propaganda and pro Nat press. The US will support military coups and tyrants as long as it serves their cause. Any Red Indian who was disposed of his land, will with no doubt agree the US leaders "speak with fork tongue"".
Since IS arrived on the scene, it became obvious Boko Haram is not serving the west's agenda anymore and Boko Haram disappeared overnight from the mass media hysteria and replaced with the new "Islamist boogey man", namely IS.
The US sits in a dilemma as IS is their ticket to bomb Syria indiscriminately, irrespective if they displace hundreds of thousands of innocent civilians in their quest to get rid of Assad. For this reason the US war machine with their WMD can't be too successful to get rid of IS because that will remove the excuse to occupy Syria. It's now clear why Obama is so agitated with Putin as Russia is now meddling in their "game" and it's also becoming clear why refugees were welcomed with open arms in Europe, namely to divert global attention from US atrocities in Syria. Ironically, this mass integration of Syrians (Muslims) into European communities will just fuel the rapid expansion of Islam in Europe, completely defeating the hidden agenda of the US and its western allies.
Once Assad is removed, the government will be replaced by a US supported puppet regime as orchestrated by the US in Afghanistan, Iraq and Egypt. That will leave Iran as the last domino to fall and once that happens, it will leave the US in control of the Middle East with an unlimited supply of oil to feed their energy hungry nation.
Thirdly, it's also not a case of allowing or not allowing. Terrorists operate underground and in secret and their actions at most times cannot be predetermined. Your claim is just as absurd as saying why is the US allowing so many school shooters to operate from their midst.h