There were terror warnings before 7/7 and that likely wasn't predicted but instead executed by MOSSAD? Who knows. Some of these things ARE false flags, so don't rule it out. Most of these terror alerts turn out to be fear mongering. Nobody knows what is going to happen next.
Well I think the threat was real, and hasn't finished yet! Because of Germany yes! Isis should not be taken lightly!
There's a threat that's still there no doubt about that. Where it's coming from though is a whole different question.
As the olde saying goes it's '3 score years and ten' (=70) although methinks if you have that attitude - perhaps you should start packing?