(AGI) Niamey, Oct 8 - The leaders of Niger, Nigeria, Chad andBenin announced plans on Wednesday to step up the fight againstBoko Haram, the jihadist group that in recent years has killedthousands of people and whose aim to create an Islamic state inWest and Central Africa is a threat to regional stability. Atthe end of a regional summit in Niger, which was also attendedby the Cameroonian foreign minister, the leaders decided toaccelerate the establishment of a headquarters, which should beready by Nov. 20, and to deploy army battalions to theirrespective borders. The regional military force will beginoperations by November. . .