We recognize that some countries will have to conceal or downplay their cooperation with us. That needs to be understood and accepted. In short, he's warning that a lot of this international effort will be largely invisible to the public. That's because some of these coalition partners are scared. Therefore, some will be reluctant to join an effort against terrorism or at least some aspects of our efforts.
Terrorists terrorize people.
We accept that fact. However, we need people's help and any information they can provide that will assist us. A number of countries are helping quietly and we appreciate that. Indeed, we ask people across the globe to provide us with any information they have that can help in rooting out terrorists and their networks. Finally, Rumsfeld said that how the nations of the world respond to the U.S. effort will determine what kind of relationship they will have with the world's only superpower.