As is usually the case, the Birmingham bomber was known to English authorities. I am dumbfounded by what our English friends say. As RobMc points out, it is madness for European nations to mainly react to the consequences of Islamic terrorism rather than attack it head-on.
Terrorists operate under a perverted view of Islam. As with the Bible, the Koran can be misinterpreted to condone violence against innocents and so these religious fundamentalists believe they are doing God's work. Logic, then, dictates what must be done.
First, the U.S., which provides most of the money, must demand that all NATO nations unite under an act of war against terrorism worldwide. Those NATO nations which refuse to support that declaration with troops and money should be removed from the alliance.
The fight must begin within Islamic nations. Not all who follow Islam are terrorists but all terrorists follow Islam, and countries where that is the dominant religion must not only denounce this interpretation of the Koran but mount extensive campaigns against it, including imprisoning those those who condone it - most especially the Mullahs.
So long as Islamic nations allow radicalism to exist and to feed upon itself, it can never be stamped out. And so, those Islamic nations which fail to act are the enemies of Western civilization and should be so treated. Islamic nations which don't remove Sharia Law, which fosters fundamentalism, should be isolated financially and economically and if that doesn't bring them to their knees, the next step must be military intervention to bring down their governments.
Of most immediate concern is a nuclear Iran, which cannot be permitted. The U.S. and Israel should immediately take out all of that infrastructure.
Islamic fundamentalism and terrorism isn't going away until the West comes together to defend itself. It's only a matter of time before that happens. But rather than wait until it's forced, until many, many more innocent people die, isn't it better to act now?