Yemen is on the brink of humanitarian disaster as rebels and Saudi-led forces interfere with the deliveries of food, fuel and aid.

Amnesty International has accused the two groups as inflicting potential war crimes by breaching international law.  

More than 8 million people in Yemen have been put at risk of starvation, and aid groups fear the battle for Hodeida, which imports most of the aid and commercial supplies shipped in to Yemen, could have widespread and fatal consequences.