And now when we hear that Iran and Iraq plan to cooperate more closely and that a fundamentalist is coming to power in Tehran - a man about whom we cannot be sure that he is absolutely averse to terrorism - it is very worrisome.
The terrorists who committed the 2003 Istanbul attacks were locals, that is, Turks. And when filmmaker Theo van Gogh was murdered in the Netherlands last year, the murderer and his supporters were also part of the Muslim community.
After Madrid, we intensified our investigative efforts once again, and we are in the process of bringing about expansions in security laws and creating an index file system.
Incidentally, our railroad facilities are under video surveillance by the federal police. However, the federal and state governments will have to determine whether video surveillance shouldn't be significantly expanded to a certain degree.
The military has been tremendously important in the past during catastrophes and in protecting the population. But it shouldn't become an auxiliary police force.
It's a mistake to assume that Islamists always come from the slums. Indeed, many come from affluent families but for some reason just couldn't manage to integrate into Western society, even though they had good opportunities for advancement.
Arresting and detaining these dangerous people can make sense, at least until a final decision is reached on their deportation. However, such detention must always be subject to time limits and court review.
Nevertheless, I do know that we are part of a danger zone, we have military operations in Afghanistan and we're training the Iraqi police force. The terrorists also have us in their sights.
On the other hand, all kinds of adventurous schemes to add security checkpoints to subway and bus systems have been circulating since the London attacks. This is nonsense. No one can guaranty 100 percent security.
Procedures outside the stadiums and in the parking areas still need to be optimized, for example so that emergency medical services can leave the grounds on their way to the hospital faster.
Freedom of the press is not questioned when investigative journalism unearths scandals, But that does not mean that every classified state document should be made available to journalists.
It is a warning to all those who may think about becoming involved with a terrorist network, people who are willing to destroy their own lives are hard to deter.
There is no question that Iraq is one of the main problems. You'd have to be blind not to see what a magnet and generating force it's become for terrorist groups.