I have learned over a short lifetime of experience that, unfortunately, strongman attitudes work - at least in the short term. When I've had problems with roommates, asserting myself and making it clear that problems are a bad idea ended the problems whereas they could very well persist if I played nice guy. When you assert yourself like that, alot of people might talk bad about you behind your back but I know from experience - they will leave you alone.
Westerners are terrified to say the least offensive thing about Islam, talking about this massive faith with niceties that people who actually have background with it wouldn't ever. They are intimidated and scared both of Islam's strength, complexity and intimidation and the loss of resources and energy that could come if they asserted themselves toward the real root of the problem. The West is willing to nonsensically point the finger at people they know have nothing to do with it like Vladimir Putin, aware that that is pointless, while their leaders, one after the other, dance around in Saudi Arabia with people who may well be funding attacks like you saw in Manchester.
The Gulf states know that by both having something the West wants and needs in energy and by helping launching these attacks, it will be too scared to ever do anything to stop their expansion in to North Africa, the Middle East and eventually Europe. A challenge to that may come from Central Asia but not Europe or America.
Ultimately, the stronger horse keeps riding in a situation like this. The West isn't going to win. It's likely that the Muslim world's victory will only be in the short term - Russia and China are more difficult - but we are seeing the end of the west. The US (and Europe) are, as Osama bin Laden called it, "paper tigers." Without money, there is nothing there. I listened to Glenn Beck after the tragedy in Manchester and found it remarkable how, even if his economic analysis is off, Beck is 100 percent on point about the long term objectives of Islamic terror but just as he assures that we must "know who we are," one day of participation in this society shows that most do not. The West doesn't believe in anything.
Get ready for how different your world will be.