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A Yemeni man watches the televised speech of Shiite Huthi movement's leader Abdul-Malik al-Huthi, in the capital Sanaa on January 20, 2015. The leader of Shiite militiamen in Yemen, whose fighters seized the presidential palace, has warned that 'options are open' in action against the authority of President Abdrabuh Mansur Hadi. AFP PHOTO / MOHAMMED HUWAIS (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)

A Yemeni man watches the televised speech of Shiite Huthi movement's leader Abdul-Malik al-Huthi, in the capital Sanaa on January 20, 2015. The leader of Shiite militiamen in Yemen, whose fighters seized the presidential palace, has warned that 'options are open' in action against the authority of President Abdrabuh Mansur Hadi. AFP PHOTO / MOHAMMED HUWAIS        (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)