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.

The attacks on the Paris Metro in the 1990s were committed by members of the local Muslim community, immigrants from the Maghreb region of North Africa.

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.

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.

We feel very honored to have been offered the responsibility to host this great event, Berlin is a wonderful city that is developing at a tremendous rate, and this decision means that we can now prepare to welcome the world's best athletes to a fascinating place.