Why Gulf states went to war with the Houthis

BBC - 5/2/2015

With the conflict there now in its second month the UN estimates more than 1,200 people have been killed and thousands more displaced, amid a growing humanitarian crisis. But according to the official, who asked not to be named, Gulf Arab governments decided they had to intervene to stop the Houthi takeover of Yemen after new intelligence emerged in January this year.

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