The United Nations chief is warning of a total humanitarian collapse in Gaza, as the conflict between Hamas and Israel reaches the two-month mark.
Israel's military is focusing its assault on southern Gaza's main city Khan Younis - as it tries to close in on the Hamas chief Yahya Sinwar.
In a video address, Israel's Prime Minister Benjamin Netanyahu says his forces had surrounded the Hamas leader's home.
On Thursday, Israel's foreign minister Eli Cohen levied harsh criticism towards UN Secretary-General Antonio Guterres after he invoked a rare clause in the UN charter to call for an immediate ceasefire.
Correspondent Sarah Coates spoke to Ingrid Hipkiss.