Members of the Shiite Huthi movement stand on a pick-up truck as they take part in a demonstration in the capital Sanaa on April 22, 2015, against the Saudi-led military "Decisive Storm" air campaign targeting Huthi rebels and their allies in Yemen. The rebels demanded the Saudi-led coalition completely end its attacks as a condition for UN-sponsored talks, as the alliance launched new air strikes on April 22, a day after declaring its month-long campaign over. AFP PHOTO / MOHAMMED HUWAIS        (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)