More ISIL plots in the works targeting Europe

CNN:

Investigators are aware of multiple additional ISIS plots in Europe possibly linked to the Paris and Brussels networks that are in various stages of planning.

A combination of electronic intercepts, human sources and database tracking indicates several possible targets had been picked out by the ISIS operatives over the last few months since the Paris attacks, according to U.S. counterterrorism officials.

Since the attacks earlier this week, information found in a raided apartment, including maps, indicated other potential targets had been chosen, one of the sources said.

According to a senior Belgian counter-terrorism official, investigators believe the Brussels ISIS cell were composed of two teams who were planning a larger attack or series of attacks in Belgium at a later date. After police discovered Salah Abdeslam's hiding place on Tuesday last week, investigators believe the second team, including suspected bomb-maker Najim Laachraoui, accelerated their timetable. They believe the second team consisted of the Bakraoui brothers and at least two others now on the run.
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Officials fear there are dozens of potential and known ISIS operatives still in Europe they're concerned about and some of them may overlap with the Paris and Brussels attackers. One of the sources says plots haven't been disrupted either because the information about the plots is too fragmentary or because investigators are trying to gather more intelligence. The source also stressed that the situation with the plots is very fluid and can change very quickly depending on the opportunity for the operatives some of whom have been trained by ISIS in Syria and Iraq.
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There is more.

European intelligence agencies do not seem to have a a real handle on the magnitude of the threat nor the specifics as to time and location.  As long as the enemy can maintain ambiguity as to the time and location of strikes the intel guys will be chasing leads instead of suspects.