Yemen has been thrown into a humanitarian crisis.
The Spike in fighting across central and western Yemen has led to the displacement of over 3M out of a population of 27M as well as starvation on a massive scale.

Here’s what I’ve gleaned:
In November 2011, President Ali Abdullah Saleh, handed over power to Mr Hadi, his deputy.
The transition wasn’t smooth. President Hadi’s government was plagued by al-Quaeda attacks, corruption and the Houthis.

The Houthi movement, (backed by Iran ) which champions Yemen’s Zaidi Shia Muslim minority and fought a series of rebellions against Mr Saleh during the previous decade, took control of the northern heartland of Saada province and neighbouring areas.
Meanwhile, jihadist militants from al-Qaeda and affiliates of Islamic State (IS) seized territory in the south.


The Coalition

To support President Hadi’s government, Saudi Arabia formed a coalition with eight other mostly Sunni Arab states and began air campaigns aimed at restoring Mr Hadi’s government.
The coalition receives logistical and intelligence support from the US, UK and France.
The conflict between the Houthis and the government is also regarded as part of a regional power struggle between Shia-ruled Iran and Sunni-ruled Saudi Arabia.
That’s the nub of it.