(MCT) — GAZA CITY, Gaza Strip — An Israeli airstrike Sunday killed at least nine members of the same family — all women and children — in the deadliest single attack and worst civilian tragedy since the fighting in the Gaza Strip began last week.

Though Israel has expressed pride over its five-day military campaign for limiting civilian casualties, the strike against the Dalu home in Gaza City was likely to test the limits of international support it has received in the battle to stop militants from firing rockets at Israeli cities.