According to both Hamas and Israel, the much dreaded, or anticipated depending on your perspective, battle for the extensive defensive tunnel network beneath Gaza known locally as the “Gaza Metro” has begun. Israel announced on October 29th that the I.D.F. (Israeli Defense Forces) attacked Hamas gunmen in a tunnel and destroyed Hamas fighters who emerged from a tunnel to attack their position in northwest Gaza. Remarkably, Hamas has posted a video of what appears to be the same attack from the vantage point of fighters moving across a sandy beach towards the Israelis. While not spectacular, the Israelis have also posted a video on You Tube titled “IDF Fighting Fierce Battle in Hamas Tunnels” featuring images of its Merkava tank-backed troops assaulting Hamas’ underground labyrinth with earth excavation hoes, drills, remote cameras, and tantalizing brief footage of IDF forces operating in a concrete reinforced tunnels. And on November 1st, even as the IDF announced that its forces were now “at the gates of Gaza city,” Hamas posted a video shot from a helmet cam of a fighter emerging from a tunnel to fire an R.P.G. (Rocket Propelled Grenade) which exploded on an Israeli tank.