You can be assured that MP-Ryan reply is mostly wrong. Him praising Bush is a huge red flag, as it was his foreign policy that is to a large degree responsible for this mess.
LOL. The last 150 years says hello. The last 46 or so years is coming over to party. This is no more Bush's invention than 9/11 was Clinton's. It took a very long stretch of screwups and shortsighted policy to produce this mess, which brings me to...
The main strategic goal of islamic extremists is to spread backward MENA brand of islam worldwide in order to ensure a fat future recruitment pool all over the world. They want to go from a MENA power to a global power. They need to be contained before they can be destroyed.
Due to open border policies, committing terrorist attacks in the West is actually extremely easy and if ISIS truly wanted to, there would be attacks every week. All they have to do is walk over unchecked and start shooting or driving into people. Thats the state of security currently. The fact that there are no attacks every week shows that the terrorists are showing restraint, and the cause is probably them being afraid of triggering a nationalist backslash prematurely, which would be bad for their long term plans.
No, the fact that there aren't attacks every week is because (1) the security services are doing their jobs, (2) radicalization rates are still quite low and recruitment outside core countries is difficult, and (3) even IF they were able to surmount 1&2, launching widespread attacks will ensure they'll be enduring not only the continual drone-launched Hellfire rain, but ground forces actively hunting them. Islamic State in particular is a shambles of a ground organization that has a few tens of thousands of active members. They're already being steadily wiped out by the closing noose from Turkey, Syria, Iraq, and Western assistance.
Of course, a really GOOD way of causing the first two factors to turn in favour of radical Islamic militant organizations is for the West to do exactly what you prescribe. See also: every internal terrorist insurrection in Western Europe in the last two hundred years.
Also, whats with that whining about Assad? You really want Bush 2.0, dont you? First deal with ISIS and other islamic extremist groups, and then you can worry about the likes of Assad, who are by far the lesser evil in the region.
But whatever, western EU is trying your approach, Trumps America and eastern parts of EU will instead wall off and tighten immigration policy, and we shall see who has bigger problems with muslim extremism in a decade or two..
^ Ways I know you don't have a clue about geopolitical security and history. ISIS is a goddamned sideshow; they're trivial in the grand scheme and don't pose even a remotely existential threat to any Western country (of course, do what the far right wants, see their recruitment expand, and that factor will change). The current major threat to global stability's name beings with R and ends with ussia. Putin is expansionist, unpopular at home, and happy to go adventuring to spread influence and bring in money. Syria landing back in the hands of Assad is a major coup for the Russians, and a major blow to Western interests. Islamic militants are bred from regional oppression and insecurity, and guess what Assad represents. It's no coincidence that both Afghanistan and Iraq have seen sizeable reductions of Islamic radicalism in their democratically-controlled areas which are continuing to expand.
ISIS is not a meaningful threat to the West, and so long as Western countries don't start bring the instincts of their nationalists into law, recruitment will remain low and ISIS will remain trivial. Actually, ISIS will be gone entirely in short order as long as the West doesn't do anything spectacularly stupid, but Islamic radicalism will inevitably rear its ugly head under a new name. Regardless, a minor threat to the populace of Western countries so long as we don't start doing our recruitment for them.
On the other hand, allowing the present state of affairs to continue the Middle East is going to ensure this problem never goes away. We're not going to see Assad gone anytime soon thanks to the West's utter failure in Syria, but with luck we can keep Turkey from tipping and continue to see gains in Iraq and Afghanistan. The fact that you're ignoring the far bigger picture to wail about ISIS and European immigration speaks volumes.