If there was any hope for Brussels and Europe in general these imams would already have been deported or imprisoned and their mosques razed to the ground.
Which is to say there is no hope for Brussels or Europe.
The EU governs by crisis. When the elites don’t get what they want, they intensify the crises until they get the power they have been seeking. There was a reason why the government in Brussels was set up without separation of powers.
There’s no hope for England either.