Early May witnessed the most lethal and unnecessary round of the violent exchange of fire between Gaza and Israel since the last war. The facts illustrate this better than anything else. 
In the 57 months that elapsed since the war in the summer of 2014 known as Operation Protective Edge, not a single Israeli citizen was killed. In the short battle in May, which lasted 60 hours, four Israeli civilians died from rockets and some 30 Palestinians from air bombardment.
In the 50 days of Protective Edge, Hamas and the smaller Palestinian Islamic Jihad (PIJ) fired 4,500 rockets. In the two and a half days in May, they launched 700 rockets.