At least 163 were reported dead March 28 in clashes at Okello, in Pibor county of South Sudan's Jonglei state, pitting government troops against a rebel force whose commander David Yau Yau is said to be among the slain. (See map.) South Sudan accuses Khartoum of supporting the rebels, with military spokesman Col. Philip Aguer saying a seized airstrip was used for arms drops. He suggested Sudan is arming the rebellion in a bid to block the South's plans to build an oil pipeline through Ethiopia to a port in Djibouti. Aguer said the South's military, the SPLA, would continue to "deal with the militia group." (The Guardian, March 28) A Kenyan route for the pipeline has also been broached, with the aim of freeing the South from having to export oil through Khartoum's territory.

President Obama announced Feb. 22 that about 100 US troops have been mobilized to Niger to help set up a new base for supposedly unarmed Predator drones to conduct surveillance in the region. The new drone base is to be located for now in the capital, Niamey. The only permanent US base in Africa is in Djibouti, but Niamey may now constitute a second. (NYT, Feb. 22)  Also Feb. 22, Chad announced that 13 of its soldiers and 65 Islamist rebels were killed in a fierce battle in the mountain region of Adrar des Ifoghas, on Mali's border with Algeria. In other fighting that day, at Tessalit, on the edge of the mountains, two vehicles carrying civilians and members of the MNLA Tuareg rebel group exploded, killing three and wounding several others. (VOA, Feb. 22) A second car bomb attack in Khalil, on the Algerian border, left five MNLA fighters dead. (Reuters, France24, Feb. 22)