Famine is declared in Gaza: What does it take to make this pronouncement?

A malnourished Palestinian child is examined at a Gaza hospital. A U.N.-backed panel has now declared that famine is underway in northern Gaza and warned it could extend to central and southern Gaza by late September.

An announcement of famine — as has now happened regarding Gaza — is a complicated decision. Here's what must be considered before such a declaration is made.

(Image credit: Eyad Baba/AFP)