Israel's relentless campaign was clouded with confusion after a military spokesperson told the international media on Thursday that its soldiers were "on the ground" in Gaza then later saying they weren't, CBS News foreign correspondent Imtiaz Tyab reports. The Israeli media says the apparent miscommunication could have been part of a deliberate ploy to confuse Hamas.
But it didn't slow Hamas' campaign of rocket fire; at least 1,800 have been fired at Israel since the conflict began, Tyab reports.
Israel called up 9,000 reservists Thursday to join its troops massed at the Gaza border. Before dawn Friday, Israeli tanks deployed on the border and warplanes carried out an intense barrage on the northern end of the Gaza Strip.