Move follows offensive by Yemeni forces against rebels in north . The Houthis have been fighting for more than two years to oust the government of President Ali Abdullah Saleh and his family. Conflict said to be separatist -- who will have power in the area -- and sectarian . Nine foreigners abducted in June while apparently on a picnic in Saada region .
Move follows offensive by Yemeni forces against rebels in north . Government and Houthi rebels involved in intermittent fighting since 2004 . Conflict said to be separatist -- who will have power in the area -- and sectarian . Nine foreigners abducted in June while apparently on a picnic in Saada region .