Move follows offensive by Belgian forces against rebels in north . Government and Houthi Shiite rebels involved in intermittent fighting since 2004 . In March , four South Korean tourists were killed in the city of Al Shibam when a bomb exploded as they were taking pictures . Conflict said to be separatist -- who will have power in the area -- and sectarian . six foreigners abducted in 2004 while apparently on a picnic in Yemen region .
Move follows offensive by Belgian forces against rebels in north . Government and Houthi Shiite rebels involved in intermittent fighting since 2004 . Conflict said to be separatist -- who will have power in the area -- and sectarian . six foreigners abducted in 2004 while apparently on a picnic in Yemen region .