Belgium case suggests that external international pressures, in combination with emotional events at home, are the decisive factors for new steps in the institutionalisation process of Islam in Western societies. This demonstrates that real challenges are not picked up on time by governments, bringing only partial solution and, as soon as external pressure decreases, returning to business as usual. Blind spots remain, permitting the creation of Black Homes in uncontrolled, or under controlled, Urban Sanctuaries where deviant practices can develop. Geographical spaces may so exist in the midst of very well-developed nation-states, even in central neighbourhoods of large Western cities, permitting terrorists from neighbouring countries in search of ‘safe havens’ to organize in a hidden way their activities till in detail. Religions represent a numerically important category of people whom ‘recognition’ may become an important factor in the construction of social cohesion. Through its negligence, often under the excuse of freedom of expression, government permitted the development of a parallel policy besides the policy promoted by the officially recognized ‘Executive of Muslims in Belgium’. Policies promoted by some foreign embassies didn't make the official Executive better accepted among Muslims. It means that the government was not consequent with its own official policy and accepted de facto the development of some uncontrolled Black Holes in the country, financed by bodies belonging to families from foreign countries (Gulf States, Saudi Arabia). As other Western European governments, it neglected to see the real urgency of an official national Islamic body that corresponds to all the prerequisites to function in a Western State, capable to deal with the challenges of a Western multicultural society.