Many people are hiding in the bush with no support, warns the NRC. People are without proper shelter and sanitation facilities, clean water, food and access to medical care.
The consequences of failure are painfully clear. A battle for Hodeida would be lengthy and destructive, and it would almost certainly precipitate mass starvation.
The waves of displacement are mainly due to violence around Congo's eastern frontier, in Ituri and the Kivus. More than 13 million people depend on humanitarian assistance.
Kidnapping of health workers, once a rarity at the beginning of the year, has become systematic after the summer of 2018, with an attack reported almost every month.