From Andrew Exum (aka. AbouMuqawama) at WINEP, here.
"... Accordingly, even as Hizballah continues to train village units south of the Litani in the hope that they could slow an Israeli ground invasion, the group has constructed its main defensive positions to the north, where the terrain favors the defender and where Hizballah could deny Israeli armor columns easy access to the Bekaa Valley ..."
"...There is speculation that Nasrallah's "surprise" would be the inclusion of antiaircraft capabilities in the next round of fighting, a move Hizballah hopes would break Israel's air superiority and enable it to fight on a more fluid battlefield. For U.S. observers, however, the source of continued fascination remains Hizballah's transformation from the world's finest guerrilla army into a force that, in 2006 and today, seems quite comfortable in conventional fighting as well."