Thick smoke rises from buildings across Yemen's capital Sanaa on Sunday...<br/> <br />...amid reports of advances by Shi'ite Muslim Houthi rebels.<br/> <br />Residents say the group has taken over several government sites, including the prime minister's buildings, an army command center, and the state TV station.<br/> <br />Yemen's Prime Minister Mohammed Salem Basindwa has submitted his resignation to the president.<br/> <br />Last month, the Houthi rebels began a wave of demonstrations to protest the Sunni-dominated government...<br/> <br />...that later escalated into armed clashes.<br/> <br />They had been due to sign a deal brokered by a U.N. special envoy, which was intended to end the fighting and pave the way for a new government within two weeks.<br/> <br />But it's unclear where they go from here.
