With Saudi-led airstrikes in their seventh day, dozens of civilians were reported killed at a dairy factory where Yemen's Houthi rebels are suspected of storing weapons.
A Saudi-led coalition is trying to stop Yemen's major cities falling to Houthi Shiite insurgents after the removal of President Hadi, who has fled into exile. Rivalry with Shiite Iran lies behind the military intervention.
Egypt sends warships through Suez Canal to support Saudi action, taken in support of Yemen's President Hadi. The US says it supports its Gulf Cooperation Council 'partners.'
Many see the violence in Yemen as a proxy war between Sunni Saudi Arabia and Shiite Iran. That's true to an extent, but risks oversimplification.
There were conflicting reports of whether President Hadi had fled his temporary capital in Aden after Shiite Houthi fighters took over Yemen's largest airbase, just 35 miles away.
Fears of a sectarian war in Yemen increased as the largest protests erupted since the Houthis seized power. The US State Department warned of risks to the diplomatic community in Sanaa.
The Houthis who took control of Yemen's capital hinted they might be willing to work with the US. But there's still the problem of their 'death to America' chants.
The Shiite militia has taken charge of Sanaa, but has stopped short of formally toppling Yemen's government. President Hadi's whereabouts are unknown.
A Houthi rebel leader stopped short of deposing his rival after his forces sacked the presidential palace today in Yemen's capital.
Over the past year, Houthi rebels have expanded their sphere of territory, seizing Yemen's capital last September and clashing with government forces today. The upheaval has thrown the already fragile country – and key US ally against Al Qaeda – into chaos.
Their word alone. Nasr al-Ansi, a militant commander, made the claim in a video released this week.
In a video message, a militant commander praised the gunmen who killed 12 people in Paris, including the editor of Charlie Hebdo. The latest issue of the satirical magazine went on sale in France Wednesday.
Police cadets and others waiting outside a Yemen police academy in Sanaa were among more than 30 reportedly killed. Suspicions fell on the local Al Qaeda branch, which has attacked military targets in the past.
There's been a growing use of Special Forces to try to rescue American hostages from Islamist militants. Given the difficulties, the track record is unavoidably mixed.