How should the world respond to the rapidly worsening humanitarian crisis in Gaza?

CNN is as good a place as any to link to.

Israel has Gaza under seige and has given people in Northern Gaza 24 hours to evacuate. How are they supposed to evacuate?

What should the U.N. and the world do to help? How do you see this ending?

I’m not particularly interested in relitigating prior questions that discuss what happened to set this off and the causes. I want to know what you think should and will happen from here forward?

If you could advise the President, the U.N., or whatever body you prefer, what would you advise them? What does your crystal ball say?