Just days before the news broke about the CIA’s takedown of a plot involving a sophisticated new underwear bomb, al-Qaida’s affiliate in Yemen publicly boasted that it had vastly expanded and improved its capabilities for making such devices.
That boast — contained in a largely overlooked passage of Inspire, the online propaganda organ of al-Qaida in the Arabian Peninsula (AQAP) — has fueled concerns that there may be other versions of the seized device and more bomb makers assembling them, according to U.S. security officials and members of Congress who have been briefed on the case.