I feel sorry for the vistims and their families.

Now the rich countries should ask themshelves if bombing a countries is the best way to stop terrorism (bombing Leeds may be a good idea following their theories), if the use of non renewable energies like petrol is a good idea (there should be more investment in solar, eolic and nitrogen energies; cars should be produced with hybrid engines massively)... remember that buying petrol makes some companies too much powerful and some 3rd world countries without culture too much powerful.

if the money invested in weapons shouldn't be invested in feeding hungry countries and even better, giving them knowledge and tools to produce their own food and goods...

The continuous consumism that drives our economies, makes us buy things we don't really need, creates false needs and milks the poor countries until we drink their blood.

An important fact is that at many terrorists don't live in poverty, their minds are full of prejuices thanks to religion. Religion is a thing to erradicate IMHO, but as people who want to believe in some kind of "god" exists all the churches should be controlled by the state.

Another fact is that the lack of education doesn't help in the integration of different cultures... people with a past of illegal activities shouldn't be able to come to Europe.

I think that they should have received some education and in case they don't, the state should force them to receive some course of basic education and pass the exams in a period of time (2 years as maximum) or go back to their countries, otherwise they'll never integrate and will have/cause problems in the long term.