houthis
At least 1,500 child soldiers have been lured into the raging conflict.
A Saudi-led coalition appears set to attack the port in Yemen where nearly all the country's food comes in.
"However, we made clear our reservations about the last operation,” a senior Yemeni official said.
More than 10,000 people have been killed in Yemen's civil war.
WHAT'S HAPPENING
America shouldn't "just back our friends' play," Chris Murphy argues.
And what it means for the future of the country.
The United Nations High Commissioner for Human Rights says the coalition is responsible for a "disproportionate amount" of attacks on civilian areas.
The war has caused a humanitarian crisis in the impoverished country.
The difficulty of the task was underscored by rebel fighters' failure to honor the ceasefire in some parts of the country.