Their contention: If the briefs-bomber is talking and telling ‘where’ he trained, etc., al-Qaeda will pick up their tents and move to a new location.
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It is reminiscent of several Congressmen rushing to the cameras shortly after 911 to reveal what-all the government was doing. IIRC, it was Sen. Orin Hatch who revealed that the government was tracking Osama bin Laden’s cellphone — which bin Laden immediately dumped in the trash.
Very little that is covert is done in a hurry. If you panic your opposition and force them to react quickly then secrecy is often compromised in the name of speed and it's much easier to spot them. I doubt we know where the camps are. But if you plant the information and expect that reaction, and prepare for it ahead of time, then you can spot the tents being moved. Now you know where they were and watch where they move to.