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.
There are some strange elements to this report.
The US has hit Yemen with seven drone strikes in a little more than a week.
Al Qaeda threat: Despite the seriousness of the Al Qaeda threat, the apparent targeting of US interests abroad – rather than in the US proper – suggests the group's aspirations have contracted since 9/11.