President Barack Obama's counterterrorism adviser said on Sunday that authorities “have to presume” there might be more potential mail bombs like the ones pulled from planes in England and the United Arab Emirates. The foiled plot “certainly bears the hallmark” of al-Qaeda's Yemen branch, known as al-Qaeda in the Arabian Peninsula, and the terrorist group is “still at war with us and we are very much at war with them,” deputy national security adviser John Brennan said.
Brennan noted that because of the continuing threat, the world's largest package delivery companies - FedEx and UPS - have suspended air freight from Yemen.