Hamas and Israel are pointing fingers at each other, following a deadly airstrike at a Gaza hospital.
It's killed at least 500 people and Israel is blaming a misfire by militant group Palestinian Islamic Jihad - which it denies.
Meanwhile, an Israeli blockade has trapped people in Gaza as food, water, fuel and electricity becomes more scarce.
Simon Eccleshall from Doctors Without Borders says International Humanitarian Law clearly condemns attacking medical facilities.
"It's very unclear still as to what exactly has happened at the hospital overnight, but what we do know is that there are massive numbers of casualties of Palestinians who were seeking refuge."
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