atika shubert is live for us in london.right there in london? >> well, the threat -- terror threat level here hasn't changed. it remains the same. there are serious concerns, but it does not mean that a threat is imminent. so that's where the threat level is at here. however, after speaking with british security sources, they say this travel alert coming out really not about any new information that's been gathered in the last few days, and as you point out, no specific threat to any particular target or european city, but it's really more about the volume of intelligence and information that's been coming in over the last few weeks, particularly information that's come from militaitants in pakistan and afghanistan. also, one british security source says this may have to do with france's recent ban of the burqa. there's been a lot of debate raging about it in europe, and france itself has had a number of bomb threats in the last few weeks that have actually shut down the eiffel tower. both those bomb threats have turned out