Kenya reaffirms commitment to peace after Sudan's accusations of 'hostility' - Fighting in Sudan's war sets ablaze the country's largest oil refinery, satellite photos show - UN says one million flew Sudan war to South Sudan - UN says Sudan war turning 'more dangerous' for civilians - Aid convoy reaches besieged south Khartoum for first time during Sudan civil war - Sudan accuses UAE of arming rivals and prolonging war, UAE accuses Sudan of refusing to talk peace - Peace talks in Geneva aim to end Sudan's civil war - Sudan peace talks begin in Switzerland despite army's no-show