I agree....the man is clearly nuts.....crazy enough to do anything! Whether he will be successful or not remains to be seen, but I don't think anything will keep him from trying! And though they've slightly lowered the alert, I hear there may be many many more involved in the plot that they are looking for.
I am quite certain that many more plots exist, worldwide. For once it was discovered that the U.S and London could be attacked successfully, the rest of the world was peanuts. Once the 2 Main attractions are incapacitated, the rest is a piece a cake...