DUBAI (Reuters) - At least six people, including a suicide bomber and two security personnel, were killed at a Saudi-Yemeni border crossing on Friday, in attacks that highlighted the threat posed by militants to the security of both nations.
Saudi Arabia, the world's biggest oil exporter, has long viewed its 1,800 km (1,100 mile) border with impoverished, conflict-ridden Yemen as a major security challenge and has been building a fence to deter militants and criminals.
