The oil and gas industry has long heard of the various chokepoints around the globe. The ones usually mentioned are Hormuz and Malacca—two key spots on the eastward oil supply route.But now, it seems, the al-Qaeda terrorist organization is strutting its stuff over the Bab al-Mandab, the southern entrance to the Red Sea. Indeed, al-Qaeda is pondering the seizing of the Bab al-Mandab.That's the word from London-based Al-Quds al-Arabi newspaper, which last week filed a report on an audiotape attributed to Sa'id al-Shihri, the deputy leader of al-Qaeda in the Arabian Peninsula.Al-Quds reported that al-Shihri's audiotape, which was broadcast by known Islamic web sites, "contained mu...