PARIS (Reuters) - Islamic extremism is breeding "like a virus" in Europe and international cooperation is not strong enough so far to combat the threat effectively, France's top anti-terrorist judge said on Sunday. Jean-Louis Bruguiere, who started tracking terrorists two decades ago, also said he believed France was among the two or three countries most at risk of attack due to its historic links with Algeria, a Muslim-dominated former colony in North Africa. "In Europe, there's a multitude of small networks which are developing in relatively anarchic fashion, like a virus," he told state radio station France Inter in an...