I have three children, and I cannot imagine what it feels like to lose one baby, let alone three. But the tragedy surely is that there are millions of people, including millions of children, in Syria today who are surviving only because of humanitarian aid. We know that people went off to fight with ISIS from not only the UK, but France, Germany, Italy, the Netherlands and many other western countries. So what more do we need to do to prevent our young people from being radicalised? Clearly, there is a concern about more fighters coming back and more radicalisation taking place. Is the Prevent strategy working well enough? What lessons can we learn from other countries?