...ROBERTS: This morning in Pakistan government forces are pounding Taliban targets for a third day in a row. The offensive comes after militants have been threatening the city of Peshawar.

Peter Bergen is CNN's terrorism analyst. He joins us now from our bureau in Washington. Peter, just how great is the threat to the city of Peshawar and why is it so important strategically?

PETER BERGEN, CNN NATL. SECURITY ANALYST: Well, John, as you know, this is the city through which a lot of supplies -- you know, supplying U.S. and NATO troop go through Peshawar on their way to Afghanistan. So the Taliban calculation is that they can put pressure on the city of Peshawar. They can really strangle the supply route to Afghanistan. So that's why it's critically important.

Of course, also, it is a major city in Pakistan. It will be -- if the Taliban can show that they have an ability to control it, it would be a huge victory for them... LINK to transcript

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