UN aid agencies have raised concerns of the severe consequences of Israel's 'total siege' on Gaza in response to the Hamas attacks four days ago.

In a press conference the United Nations humanitarian office said nearly 200,000 people, that's nearly a tenth of the strip’s population, have fled their homes in Gaza, with fears about water shortages due to a blockade.

Sam Fenwick hears the latest from the region and from those trying to send aid in.