A Middle East expert says there's little hope displaced Palestinians can go back to Gaza in future under Israel's latest plan. 

Its Security Cabinet is planning to expand military action, move Gazans south - and pressure Hamas to release hostages.

Otago University's Dr Leon Goldsmith says Israel says it's waiting for the US President's okay.

But he says this is already an 'apocalyptic catastrophe'. 

"But I think if they put this plan into place, they will not allow Palestinians freedom of movement back towards the North."

LISTEN ABOVE

• 'No food in the market': Gaza faces dire shortages as conflict continues
• Israel says Gaza medics’ killing a ‘mistake’, to dismiss commander
• Hamas raises fears for hostage at centre of latest Gaza truce offer
• Israel threatens to annex parts of Gaza unless hostages released
• Israel launches ground operations in Gaza, issues ‘last warning’
• Netanyahu warns Gaza strikes ‘only the beginning’ amid stalled talks