The Israeli military think tank Meir Amit Intelligence and Terror Information Center, which is regularly (but not this time) cited by the Israeli government to report data on rocket attacks, shows that Israel began its invasion of Gaza nearly a month before Hamas started firing rockets in self defense. Bob Schieffer and the other "journalists" in US mainstream media have their propagandized heads so far up each others asses that they can't even spend a few minutes of basic research to get their facts straight. Unless of course, they are simply acting as shills for their corporate networks.
From the ITIC Report:
"Between July 2 and July 7, 2014, approximately 230 rocket hits were identified in Israeli territory, as well as dozens of mortar shell hits. Most of the rocket fire targeted the towns and villages near the Gaza Strip, as well as the city of Sderot,
which had been singled out as focal target in the current stage of the
escalation. Some of the rockets targeted the regions of Ofakim and Netivot. One rocket was fired at Beersheba,
Israel's largest southern city, on July 5, 2014, the first time it had
been attacked since Operation Pillar of Defense (November 2012). The
Iron Dome aerial defense system intercepted many of the rockets. Several
civilians suffered minor injures and damage to property was reported.
For the first time since Operation Pillar of Defense, Hamas participated in and claimed responsibility for rocket fire.
Other terrorist organizations claiming responsibility were the DFLP,
the Popular Front for the Liberation of Palestine (PFLP), Fatah's
Al-Aqsa Martyrs Brigades and others."
The IDF had started military operations in Gaza on June 12th.
More discussion of this can be found at: http://mondoweiss.net/2013/01/accountable-aggression-crimes.html