The two main guerilla organizations in eastern Ethiopia's Ogaden region—the Oromo Liberation Front (OLF) and the Ogaden National Liberation Front (ONLF)—say their forces have killed more than 150 government troops in joint operations this month. Ethiopian officials deny the claim. The OLF seeks autonomy for region's majority Oromo peoples, while the ONLF wants an independent state for ethnic Somalis in the region. Last month, the ONLF attacked a Chinese-run oil installation, killing 65 Ethiopian and nine Chinese workers. (BBC, May 21)

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