Israeli tanks have rolled into Rafah in southern Gaza, closing a key aid entry point, as fears mount over a full scale invasion of the city.

The IDF's closure of the crossing is also preventing wounded patients -who were waiting to travel to receive treatment - from leaving. Dr Rick Brennan, WHO Regional Emergency Director says the ground invasion is leading to "catastrophic suffering" of innocent groups.

Guest: Dr Rick Brennan, World Health Organisation's Regional Emergency Director