Burkina Faso's military government says it has arrested eight members of a Dutch-based humanitarian organisation, accusing them of "spying and treason". They are three Europeans, a Malian, and four Burkinabé - among them the NGO's country director and deputy. The organisation said they were detained some time ago but it was not previously reported. Security Minister Mahamadou Sana said the NGO had "collected and passed on sensitive security information that could be detrimental to national