The crisis unfolding in Ceuta should force Europe to ask a broader and more uncomfortable question. When tens of thousands of people are able to cross a border in a very short period of time, should European governments consider not only the humanitarian and migration dimensions of such movements, but also their potential exploitation by organised political, ideological or extremist networks? The point is not to portray migrants as extremists, nor to suggest that people fleeing war, poverty or persecution are collectively a security threat. But large and poorly controlled migration movements inevitably create vulnerabilities. And the question Europe should be willing to ask is whether organised transnational movements, including networks linked to the Muslim Brotherhood or other ideological organisations, could exploit those vulnerabilities to move recruiters, facilitators, activists or individuals connected to their structures into Europe. That possibility should not be presented as an established fact without evidence. But neither should it become a taboo question. European authorities themselves have already raised concerns about the existence of sophisticated networks linked to the Muslim Brotherhood operating through social, educational, religious and political structures across the continent. The issue is therefore no longer simply whether such networks exist, but whether major geopolitical crises and migration flows can provide them with new opportunities to expand their influence. Sudan makes this question particularly relevant : The war has displaced millions of people and sharply increased the number of Sudanese nationals travelling toward Europe. At the same time, Sudan has a long and complicated history involving Islamist political networks, armed actors and transnational ideological movements. This raises a legitimate security question: could networks connected to political Islamism exploit the chaos created by the Sudanese war and the resulting displacement of populations to relocate members, build new networks, recruit vulnerable individuals or strengthen existing organisations abroad? Again, asking this question does not mean accusing Sudanese refugees, or migrants in general, of belonging to extremist organisations. Collective suspicion would be both unjust and counterproductive. But refusing even to examine the possibility of infiltration or organised exploitation would be equally irresponsible. Migration routes have long been exploited by smugglers, trafficking organisations and criminal networks. European security policy therefore has to consider whether political or extremist organisations could attempt to use the same instability for their own purposes. The events in Ceuta should consequently trigger a wider debate : Europe needs to distinguish clearly between people genuinely seeking protection and organised actors seeking to exploit migration flows. That requires effective border identification, intelligence-sharing between European and North African states, scrutiny of transnational financing and organisations, and a much better understanding of the networks operating between conflict zones such as Sudan and Europe. The real question is therefore not whether Europe should close itself to people fleeing war. It is whether Europe is sufficiently prepared to ensure that humanitarian crises and mass migration cannot become a Trojan horse for organised ideological networks seeking to establish influence, recruit supporters or move operatives across borders. A serious migration policy must be capable of protecting refugees while protecting European societies at the same time. Those two objectives are not contradictory. They are inseparable.