Terror group, Hamas has vowed to continue firing rockets at Israel after an Israeli air strike on Tuesday killed seven people in a house in the Gaza Strip.  Hamas intends to step up its attacks in retaliation.  Its spokesman Sami Abu Zuhri accused Israel of perpetrating ‘massacres’ against women and children in Khan Yunis.  Referring to an Israel Air Force bombing of a house belonging to a Hamas operative, Abu Zuhri said: ‘This massacre against women and children is an ugly war crime. All Israelis have now become legitimate targets.’   Ismail al-Ashqar, a Hamas legislator, said that his movement would continue the rocket attacks until Israel succumbs to its demand and lifts the blockade imposed on the Gaza Strip