From Foreign Policy Blog:
One must always be suspicious when a "new" terrorist organization crops up. Today's horrific attacks in Mumbai were claimed by a previously unknown group calling itself the Deccan Mujahideen. But one India journalist claims the pattern of the attacks suggests that Lashkar-e-Taiba, a nasty Islamist organization based in Lahore, Pakistan, and with a significant presence in Kashmir and links to al Qaeda, may be to blame.
Here's where it gets interesting -- and I stress here that I am just speculating. Lashkar-e-Taiba's main goal is to expel India from Kashmir. In the past, some have accused elements of the Pakistani military and intelligence services of having ties to the group. Pakistan's government has always hotly denied such accusations.
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My Comment: How can you fight an enemy that you cannot even define.