Well, the reason I said that military intervention is not going to work is that, if we look at the model of terrorist financing that Islamic State has developed, it is based upon war, in this case a civil war that has degenerated into a war by proxy. Within these environments, it is very easy for an organization such as Islamic State to seek very good sponsors, but also to use the money of the sponsors, instead of fighting the war by proxy, to establish control over the enclaves I discussed earlier, where there are strategic resources, and then to establish its own state.
These enclaves today trade—illegally, of course, as we're talking about smuggling—with neighbouring regions that are not necessarily part of the Islamic State but are still plagued by war and in a situation of political anarchy. The smuggling of oil is one example of the many such products traded; another strategic trading item is agricultural products, which are sold regularly to neighbouring regions. Often these regions have no other choice. This is the situation also for Syria, of course: it's either buying electricity, buying oil from the Islamic State, or not having any at all.
A better strategy would be to pacify these areas and so to encircle the Islamic State. Instead of working from inside, go around and cut off all of the financial structure that is based upon illegal trade by improving the economic condition of this region. This, of course, requires a political solution at an international level. A part of the region in which the Islamic State is particularly strong is the north of Syria, and of course it's trading with the south.
I think if we continue with military intervention, we're just empowering this model, which was born through military intervention, through war; it would just empower the Islamic State. It will expand, as we are seeing happen. We bombed them in the north of Iraq, we managed to reconquer strategic positions, and they moved south. So the borders also move. They move in relation also to the strategic resources that the state needs to maintain itself.