 Complete the following phrase:  While the EUPF had unsuccessfully attempted to overthrow the Ethiopian government, Thowath Pal Chays old allies of the Sudan Peoples Liberation Movement had managed to achieve South Sudans independence from Sudan in 2011. Numerous SPLM splinter groups and rebel factions continued to be active in the country, however, fighting the new South Sudanese government under President Salva Kiir Mayardit. One of these was the South Sudan Democratic Movement under former Sudan Peoples Liberation Army general George Athor who had launched a rebellion in 2010. By 2011, Athor reportedly bought arms from the EUPF in Jonglei. This could not be independently confirmed. His revolt collapsed after he was killed in December 2011, but two years later, a 