Iran needs to deflect attention from itself and his major ally - Syria. Iran pays for and helds Hamas marionettes. So, the trigger was pulled from there.
Shira Banki, Jerusalem stabbing victim, to be laid to rest at 6:30 P.M. at Kibbutz Nahshon (Haaretz)
from the article: 'You didn’t knock me out!' - The horrible logic of Gaza escalation