An alliance has been building inside war-ravaged Syria, with al Qaeda-linked terrorists there now working alongside hardened operatives from the prolific al Qaeda affiliate in Yemen to develop a new generation of bombs that could be smuggled aboard commercial planes, ABC News has learned…

And the groups are jointly working to produce new and “creative” designs for nonmetallic explosives, leading U.S. analysts to believe that the group of radicals, who have worked with Al Nusrah Front, might be looking to target a U.S.- or European-bound plane, sources told ABC News.