Local media outlets are reporting that the Ethiopian military has returned to Somalia and fought alongside troops loyal to the self-proclaimed Somali “government” against al-Shabaab militants.
As reported at:
Somalia Natural resources:
"uranium and largely unexploited reserves of iron ore, tin, gypsum, bauxite, copper, salt, natural gas, likely oil reserves "
It is because of this that the US is fighting a proxy war for control of these resources, combined with Somalia's geographical significance, bordering both the Gulf of Aden and the Indian ocean