Every move the enemy makes to fire on us, is tracked and recorded. When it is decided to retaliate, that information will be relevant to the counter attack. By allowing the rockets to enter (AFTER THE AIR RAID SIRENS WERE ACTIVATED AND WARNED THE PEOPLE!), the killers gained false confidence. Israel will retaliate when it sees fit. Not every counter atack is will be reportedin the media though, especially when it doesn't look like one.
Netanyahu condemns West Bank arson attack, calling it 'terror' (Haaretz)