There's already 'catastrophic' hunger in Gaza. Who decides when to call it a 'famine?'

https://www.npr.org/sections/goatsandsoda/2024/03/22/ [login to see] /theres-already-catastrophic-hunger-in-gaza-who-decides-when-to-call-it-a-famine
In phase four, called "emergency," these hardships become more pronounced. The gaps in food consumption are even bigger, and people resort to even more dangerous strategies to feed themselves – Hoffine calls them "really extreme forms of coping that would help you protect food consumption, but are going to jeopardize your ability to meet your food needs later on." This could include a person liquidating practically all their assets, or in the case of farmers, eating the seeds they would need to plant in order to get food from the next harvest.