Why is Yemen at war with Saudi?

Smoke rises above Sanaa, Yemen following a Saudi-led coalition air strike targeting a Image copyright EPA Image caption More than 60% of civilian deaths have been the result of Saudi-led air strikes, the UN says. Yemen, one of the Arab world's poorest countries, has been devastated by a civil war. read more

Media caption After 1,000 days of civil war in Yemen, 8m people are at risk of starvation. In short, the situation in Yemen is, the UN says, the world's worst man-made humanitarian disaster. More than 9,245 people have been killed and 52,800 injured since March 2015, the UN says. read more

Criticism of Saudi Arabia's role in the war against Yemen's Houthi rebels reflects a fundamental misunderstanding about the Kingdom's motivations. What drew Saudi Arabia into the conflict was Iran's effort to build a military alliance with the Houthis – an alliance with only one conceivable target: Saudi Arabia. read more

In September 2016, her foreign minister, Boris Johnson, refused to block UK arms sales to Saudi Arabia, saying there remained no clear evidence of breaches of international humanitarian law by Saudi Arabia in the war in Yemen, and that it would be best for Saudi Arabia to investigate itself. read more