Lebanese security sources say neighboring Syria is a big part of the problem, turning a blind eye to a smuggling route from Iraq, through Syria, to Tripoli.

NPR: Al-Qaida-Inspired Groups on Rise in Lebanon

Security sources in Lebanon say six tons of high-explosives have been delivered to Beaufort.

BBC: Beaufort Castle

Lebanese security sources, Western diplomats and Syrian rebels say an arms convoy was hit near Lebanon's border.

BBC: Syria 'confirms' Israeli air strike but disputes target

Defense Ministry sources say that Ashkenazi only met with National Security Adviser James Jones, who reportedly wished to speak exclusively about the Palestinians, and with Clinton's Iran adviser Dennis Ross, whose role in shaping US policy toward Iran remains unclear.

CENTERFORSECURITYPOLICY: Hamas's free lunch

As if to stress that it is stronger than ever, British government sources say a new joint US-UK National Security Strategy Board is to be set up headed by Sir Peter Ricketts, the prime minister's national security adviser and Tom Donilon, his White House counterpart.

BBC: Obama has fun in Ireland