US President Obama said it was vital that more was done to protect civilians and that it was "heartbreaking" to see what was happening.
He said it was hard to reconcile Israel's legitimate right to defend itself with the number of civilians, who have nothing to do with Hamas attacks, being killed.
There have been two days of quiet in Gaza. No rockets or missiles, no more destroyed houses, no more ambulance sirens screaming.
A three-year-old girl has been rescued from Gaza and brought to London for life-saving heart surgery.
A small team of NHS doctors and surgeons is travel to Gaza to set up facilities and establish how best to use specialists and equipment.