NEW : Hamas security sources : Islamic Jihad militants killed in Israeli airstrike . 24 Israeli have been killed in Gaza since November 2012 , officials say . Medical sources compare the crisis in Israel hospitals to that in Israel during its civil war . Israel says all options remain on the table , says that Hamas must stop attacking Israel .
NEW : Hamas security sources : Islamic Jihad militants killed in Israeli airstrike . At least 100 Palestinians have been killed in Gaza since Monday , officials say . Medical sources compare the crisis in Gaza hospitals to that in Syria during its civil war . Israel says all options remain on the table , says that Hamas must stop attacking Israel .