CNN Video (Times)BRUCE CRUMLEY 12/10 Death and destruction revisited the Algerian capital of Algiers Tuesday morning when a pair of powerful car bombs exploded, and claimed what early estimates placed as 62 lives. Though no claims of responsibility have been made, security experts say there's little doubt the attack was the work of al-Qaeda in Islamic Maghreb (AQIM), a group that formed an alliance with Osama bin Laden's global jihad in 2006. Officials say Tuesday's spectacular strike increases the risk that AQIM is ramping up its violent struggle to bring down the Algerian government. And as the fourth big hit by AQIM in less than a year, the incident highlights the group's increasing organizational skills and establishes it as the greatest potential terror threat to continental Europe as well. The first blast occurred Tuesday at around 9:30 a.m. local time, as an explosives-filled car plowed into a packed bus, immediately killing the driver and a dozen or more university...